diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2474cd66e..f88e8891f 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -126,7 +126,7 @@ dependencies {
 
     val vRoom = "2.2.5"
     implementation("androidx.room:room-runtime:${vRoom}")
-    implementation("androidx.room:room-rxjava2:${vRoom}")
+    implementation("androidx.room:room-ktx:${vRoom}")
     kapt("androidx.room:room-compiler:${vRoom}")
 
     implementation("androidx.navigation:navigation-fragment-ktx:${Deps.vNav}")
@@ -139,9 +139,10 @@ dependencies {
     implementation("androidx.preference:preference:1.1.1")
     implementation("androidx.recyclerview:recyclerview:1.1.0")
     implementation("androidx.fragment:fragment-ktx:1.2.5")
-    implementation("androidx.work:work-runtime:2.3.4")
+    implementation("androidx.work:work-runtime-ktx:2.3.4")
     implementation("androidx.transition:transition:1.3.1")
     implementation("androidx.multidex:multidex:2.0.1")
     implementation("androidx.core:core-ktx:1.3.0")
+    implementation("androidx.localbroadcastmanager:localbroadcastmanager:1.0.0")
     implementation("com.google.android.material:material:1.2.0-beta01")
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/GeneralReceiver.kt b/app/src/main/java/com/topjohnwu/magisk/core/GeneralReceiver.kt
index ac0c384fe..ea243b962 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/GeneralReceiver.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/GeneralReceiver.kt
@@ -12,6 +12,8 @@ import com.topjohnwu.magisk.extensions.reboot
 import com.topjohnwu.magisk.model.entity.internal.Configuration
 import com.topjohnwu.magisk.model.entity.internal.DownloadSubject
 import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import org.koin.core.inject
 
 open class GeneralReceiver : BaseReceiver() {
@@ -25,6 +27,10 @@ open class GeneralReceiver : BaseReceiver() {
     override fun onReceive(context: ContextWrapper, intent: Intent?) {
         intent ?: return
 
+        fun rmPolicy(pkg: String) = GlobalScope.launch {
+            policyDB.delete(pkg)
+        }
+
         when (intent.action ?: return) {
             Intent.ACTION_REBOOT -> {
                 SuCallbackHandler(context, intent.getStringExtra("action"), intent.extras)
@@ -32,11 +38,11 @@ open class GeneralReceiver : BaseReceiver() {
             Intent.ACTION_PACKAGE_REPLACED -> {
                 // This will only work pre-O
                 if (Config.suReAuth)
-                    policyDB.delete(getPkg(intent)).blockingGet()
+                    rmPolicy(getPkg(intent))
             }
             Intent.ACTION_PACKAGE_FULLY_REMOVED -> {
                 val pkg = getPkg(intent)
-                policyDB.delete(pkg).blockingGet()
+                rmPolicy(pkg)
                 Shell.su("magiskhide --rm $pkg").submit()
             }
             Intent.ACTION_LOCALE_CHANGED -> Shortcuts.setup(context)
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/UpdateCheckService.kt b/app/src/main/java/com/topjohnwu/magisk/core/UpdateCheckService.kt
index dd9345d6e..da2cc5543 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/UpdateCheckService.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/UpdateCheckService.kt
@@ -1,31 +1,33 @@
 package com.topjohnwu.magisk.core
 
 import android.content.Context
-import androidx.work.Worker
+import androidx.work.CoroutineWorker
 import androidx.work.WorkerParameters
 import com.topjohnwu.magisk.BuildConfig
 import com.topjohnwu.magisk.core.view.Notifications
 import com.topjohnwu.magisk.data.repository.MagiskRepository
-import com.topjohnwu.magisk.extensions.inject
 import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import org.koin.core.KoinComponent
+import org.koin.core.inject
 
 class UpdateCheckService(context: Context, workerParams: WorkerParameters)
-    : Worker(context, workerParams) {
+    : CoroutineWorker(context, workerParams), KoinComponent {
 
     private val magiskRepo: MagiskRepository by inject()
 
-    override fun doWork(): Result {
+    override suspend fun doWork(): Result {
         // Make sure shell initializer was ran
-        Shell.getShell()
-        return runCatching {
-            magiskRepo.fetchUpdate().blockingGet()
-            if (BuildConfig.VERSION_CODE < Info.remote.app.versionCode)
+        withContext(Dispatchers.IO) {
+            Shell.getShell()
+        }
+        return magiskRepo.fetchUpdate()?.let {
+            if (BuildConfig.VERSION_CODE < it.app.versionCode)
                 Notifications.managerUpdate(applicationContext)
-            else if (Info.env.isActive && Info.env.magiskVersionCode < Info.remote.magisk.versionCode)
+            else if (Info.env.isActive && Info.env.magiskVersionCode < it.magisk.versionCode)
                 Notifications.magiskUpdate(applicationContext)
             Result.success()
-        }.getOrElse {
-            Result.failure()
-        }
+        } ?: Result.failure()
     }
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/BaseDao.kt b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/BaseDao.kt
index 0bc976b77..462f81e64 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/BaseDao.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/BaseDao.kt
@@ -1,8 +1,6 @@
 package com.topjohnwu.magisk.core.magiskdb
 
 import androidx.annotation.StringDef
-import com.topjohnwu.superuser.Shell
-import io.reactivex.Single
 
 abstract class BaseDao {
 
@@ -20,25 +18,11 @@ abstract class BaseDao {
     @TableStrict
     abstract val table: String
 
-    inline fun <reified Builder : Query.Builder> query(builder: Builder.() -> Unit = {}) =
+    inline fun <reified Builder : Query.Builder> buildQuery(builder: Builder.() -> Unit = {}) =
         Builder::class.java.newInstance()
             .apply { table = this@BaseDao.table }
             .apply(builder)
             .toString()
             .let { Query(it) }
-            .query()
 
 }
-
-fun Query.query() = query.su()
-
-private fun String.suRaw() = Single.fromCallable { Shell.su(this).exec().out }
-private fun String.su() = suRaw().map { it.toMap() }
-
-private fun List<String>.toMap() = map { it.split(Regex("\\|")) }
-    .map { it.toMapInternal() }
-
-private fun List<String>.toMapInternal() = map { it.split("=", limit = 2) }
-    .filter { it.size == 2 }
-    .map { Pair(it[0], it[1]) }
-    .toMap()
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/PolicyDao.kt b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/PolicyDao.kt
index a1aab0560..62b16faf9 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/PolicyDao.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/PolicyDao.kt
@@ -7,6 +7,8 @@ import com.topjohnwu.magisk.core.model.MagiskPolicy
 import com.topjohnwu.magisk.core.model.toMap
 import com.topjohnwu.magisk.core.model.toPolicy
 import com.topjohnwu.magisk.extensions.now
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import timber.log.Timber
 import java.util.concurrent.TimeUnit
 
@@ -17,55 +19,56 @@ class PolicyDao(
 
     override val table: String = Table.POLICY
 
-    fun deleteOutdated(
-        nowSeconds: Long = TimeUnit.MILLISECONDS.toSeconds(now)
-    ) = query<Delete> {
+    suspend fun deleteOutdated() = buildQuery<Delete> {
         condition {
             greaterThan("until", "0")
             and {
-                lessThan("until", nowSeconds.toString())
+                lessThan("until", TimeUnit.MILLISECONDS.toSeconds(now).toString())
             }
             or {
                 lessThan("until", "0")
             }
         }
-    }.ignoreElement()
+    }.commit()
 
-    fun delete(packageName: String) = query<Delete> {
+    suspend fun delete(packageName: String) = buildQuery<Delete> {
         condition {
             equals("package_name", packageName)
         }
-    }.ignoreElement()
+    }.commit()
 
-    fun delete(uid: Int) = query<Delete> {
+    suspend fun delete(uid: Int) = buildQuery<Delete> {
         condition {
             equals("uid", uid)
         }
-    }.ignoreElement()
+    }.commit()
 
-    fun fetch(uid: Int) = query<Select> {
+    suspend fun fetch(uid: Int) = buildQuery<Select> {
         condition {
             equals("uid", uid)
         }
-    }.map { it.first().toPolicySafe() }
+    }.query().first().toPolicyOrNull()
 
-    fun update(policy: MagiskPolicy) = query<Replace> {
+    suspend fun update(policy: MagiskPolicy) = buildQuery<Replace> {
         values(policy.toMap())
-    }.ignoreElement()
+    }.commit()
 
-    fun fetchAll() = query<Select> {
+    suspend fun <R: Any> fetchAll(mapper: (MagiskPolicy) -> R) = buildQuery<Select> {
         condition {
             equals("uid/100000", Const.USER_ID)
         }
-    }.map { it.mapNotNull { it.toPolicySafe() } }
+    }.query {
+        it.toPolicyOrNull()?.let(mapper)
+    }
 
-
-    private fun Map<String, String>.toPolicySafe(): MagiskPolicy? {
+    private fun Map<String, String>.toPolicyOrNull(): MagiskPolicy? {
         return runCatching { toPolicy(context.packageManager) }.getOrElse {
             Timber.e(it)
             if (it is PackageManager.NameNotFoundException) {
                 val uid = getOrElse("uid") { null } ?: return null
-                delete(uid).subscribe()
+                GlobalScope.launch {
+                    delete(uid.toInt())
+                }
             }
             null
         }
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/Query.kt b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/Query.kt
index 6f7d53b81..50900feb3 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/Query.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/Query.kt
@@ -1,6 +1,12 @@
 package com.topjohnwu.magisk.core.magiskdb
 
 import androidx.annotation.StringDef
+import com.topjohnwu.magisk.extensions.await
+import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.withContext
 
 class Query(private val _query: String) {
     val query get() = "magisk --sqlite '$_query'"
@@ -9,6 +15,24 @@ class Query(private val _query: String) {
         val requestType: String
         var table: String
     }
+
+    suspend inline fun <R : Any> query(crossinline mapper: (Map<String, String>) -> R?): List<R> =
+        withContext(Dispatchers.Default) {
+            Shell.su(query).await().out.map { line ->
+                async {
+                    line.split("\\|".toRegex())
+                        .map { it.split("=", limit = 2) }
+                        .filter { it.size == 2 }
+                        .map { it[0] to it[1] }
+                        .toMap()
+                        .let(mapper)
+                }
+            }.awaitAll().filterNotNull()
+        }
+
+    suspend inline fun query() = query { it }
+
+    suspend inline fun commit() = Shell.su(query).to(null).await()
 }
 
 class Delete : Query.Builder {
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/SettingsDao.kt b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/SettingsDao.kt
index 197c71ede..db1d43cf1 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/SettingsDao.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/SettingsDao.kt
@@ -4,17 +4,19 @@ class SettingsDao : BaseDao() {
 
     override val table = Table.SETTINGS
 
-    fun delete(key: String) = query<Delete> {
+    suspend fun delete(key: String) = buildQuery<Delete> {
         condition { equals("key", key) }
-    }.ignoreElement()
+    }.commit()
 
-    fun put(key: String, value: Int) = query<Replace> {
+    suspend fun put(key: String, value: Int) = buildQuery<Replace> {
         values("key" to key, "value" to value)
-    }.ignoreElement()
+    }.commit()
 
-    fun fetch(key: String, default: Int = -1) = query<Select> {
+    suspend fun fetch(key: String, default: Int = -1) = buildQuery<Select> {
         fields("value")
         condition { equals("key", key) }
-    }.map { it.firstOrNull()?.values?.firstOrNull()?.toIntOrNull() ?: default }
+    }.query {
+        it["value"]?.toIntOrNull()
+    }.firstOrNull() ?: default
 
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/StringDao.kt b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/StringDao.kt
index 0fedaa414..bbfa99f7e 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/StringDao.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/magiskdb/StringDao.kt
@@ -4,17 +4,19 @@ class StringDao : BaseDao() {
 
     override val table = Table.STRINGS
 
-    fun delete(key: String) = query<Delete> {
+    suspend fun delete(key: String) = buildQuery<Delete> {
         condition { equals("key", key) }
-    }.ignoreElement()
+    }.commit()
 
-    fun put(key: String, value: String) = query<Replace> {
+    suspend fun put(key: String, value: String) = buildQuery<Replace> {
         values("key" to key, "value" to value)
-    }.ignoreElement()
+    }.commit()
 
-    fun fetch(key: String, default: String = "") = query<Select> {
+    suspend fun fetch(key: String, default: String = "") = buildQuery<Select> {
         fields("value")
         condition { equals("key", key) }
-    }.map { it.firstOrNull()?.values?.firstOrNull() ?: default }
+    }.query {
+        it["value"]
+    }.firstOrNull() ?: default
 
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/su/SuCallbackHandler.kt b/app/src/main/java/com/topjohnwu/magisk/core/su/SuCallbackHandler.kt
index 9057b7fe0..f1a63ca79 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/su/SuCallbackHandler.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/su/SuCallbackHandler.kt
@@ -19,10 +19,11 @@ import com.topjohnwu.magisk.data.repository.LogRepository
 import com.topjohnwu.magisk.extensions.get
 import com.topjohnwu.magisk.extensions.startActivity
 import com.topjohnwu.magisk.extensions.startActivityWithRoot
-import com.topjohnwu.magisk.extensions.subscribeK
 import com.topjohnwu.magisk.model.entity.toLog
 import com.topjohnwu.magisk.ui.surequest.SuRequestActivity
 import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
 import timber.log.Timber
 
 object SuCallbackHandler : ProviderCallHandler {
@@ -111,7 +112,9 @@ object SuCallbackHandler : ProviderCallHandler {
         )
 
         val logRepo = get<LogRepository>()
-        logRepo.insert(log).subscribeK(onError = { Timber.e(it) })
+        GlobalScope.launch {
+            logRepo.insert(log)
+        }
     }
 
     private fun handleNotify(context: Context, data: Bundle) {
diff --git a/app/src/main/java/com/topjohnwu/magisk/core/su/SuRequestHandler.kt b/app/src/main/java/com/topjohnwu/magisk/core/su/SuRequestHandler.kt
index deeaa63c6..d3736bd2a 100644
--- a/app/src/main/java/com/topjohnwu/magisk/core/su/SuRequestHandler.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/core/su/SuRequestHandler.kt
@@ -111,13 +111,13 @@ abstract class SuRequestHandler(
             } catch (e: IOException) {
                 Timber.e(e)
             } finally {
-                if (until >= 0)
-                    policyDB.update(policy).blockingAwait()
                 runCatching {
                     input.close()
                     output.close()
                     socket.close()
                 }
+                if (until >= 0)
+                    policyDB.update(policy)
             }
         }
     }
diff --git a/app/src/main/java/com/topjohnwu/magisk/data/database/SuLogDao.kt b/app/src/main/java/com/topjohnwu/magisk/data/database/SuLogDao.kt
index 29100b00d..b35ce4951 100644
--- a/app/src/main/java/com/topjohnwu/magisk/data/database/SuLogDao.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/data/database/SuLogDao.kt
@@ -2,8 +2,8 @@ package com.topjohnwu.magisk.data.database
 
 import androidx.room.*
 import com.topjohnwu.magisk.model.entity.MagiskLog
-import io.reactivex.Completable
-import io.reactivex.Single
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import java.util.*
 
 @Database(version = 1, entities = [MagiskLog::class], exportSchema = false)
@@ -18,19 +18,20 @@ abstract class SuLogDao(private val db: SuLogDatabase) {
     private val twoWeeksAgo =
         Calendar.getInstance().apply { add(Calendar.WEEK_OF_YEAR, -2) }.timeInMillis
 
-    fun deleteAll() = Completable.fromAction { db.clearAllTables() }
+    suspend fun deleteAll() = withContext(Dispatchers.IO) { db.clearAllTables() }
 
-    fun fetchAll() = deleteOutdated().andThen(fetch())
+    suspend fun fetchAll(): MutableList<MagiskLog> {
+        deleteOutdated()
+        return fetch()
+    }
 
     @Query("SELECT * FROM logs ORDER BY time DESC")
-    protected abstract fun fetch(): Single<MutableList<MagiskLog>>
-
-    @Insert
-    abstract fun insert(log: MagiskLog): Completable
+    protected abstract suspend fun fetch(): MutableList<MagiskLog>
 
     @Query("DELETE FROM logs WHERE time < :timeout")
-    protected abstract fun deleteOutdated(
-        timeout: Long = twoWeeksAgo
-    ): Completable
+    protected abstract suspend fun deleteOutdated(timeout: Long = twoWeeksAgo)
+
+    @Insert
+    abstract suspend fun insert(log: MagiskLog)
 
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/data/network/GithubServices.kt b/app/src/main/java/com/topjohnwu/magisk/data/network/GithubServices.kt
index 58e4626c4..2049bcaa6 100644
--- a/app/src/main/java/com/topjohnwu/magisk/data/network/GithubServices.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/data/network/GithubServices.kt
@@ -13,16 +13,16 @@ interface GithubRawServices {
     //region topjohnwu/magisk_files
 
     @GET("$MAGISK_FILES/master/stable.json")
-    fun fetchStableUpdate(): Single<UpdateInfo>
+    suspend fun fetchStableUpdate(): UpdateInfo
 
     @GET("$MAGISK_FILES/master/beta.json")
-    fun fetchBetaUpdate(): Single<UpdateInfo>
+    suspend fun fetchBetaUpdate(): UpdateInfo
 
     @GET("$MAGISK_FILES/canary/debug.json")
-    fun fetchCanaryUpdate(): Single<UpdateInfo>
+    suspend fun fetchCanaryUpdate(): UpdateInfo
 
     @GET
-    fun fetchCustomUpdate(@Url url: String): Single<UpdateInfo>
+    suspend fun fetchCustomUpdate(@Url url: String): UpdateInfo
 
     @GET("$MAGISK_FILES/{$REVISION}/snet.jar")
     @Streaming
diff --git a/app/src/main/java/com/topjohnwu/magisk/data/repository/DBConfig.kt b/app/src/main/java/com/topjohnwu/magisk/data/repository/DBConfig.kt
index a33bdde4b..be897fe45 100644
--- a/app/src/main/java/com/topjohnwu/magisk/data/repository/DBConfig.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/data/repository/DBConfig.kt
@@ -2,7 +2,9 @@ package com.topjohnwu.magisk.data.repository
 
 import com.topjohnwu.magisk.core.magiskdb.SettingsDao
 import com.topjohnwu.magisk.core.magiskdb.StringDao
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
@@ -38,17 +40,19 @@ class DBSettingsValue(
     @Synchronized
     override fun getValue(thisRef: DBConfig, property: KProperty<*>): Int {
         if (value == null)
-            value = thisRef.settingsDao.fetch(name, default).blockingGet()
-        return value!!
+            value = runBlocking {
+                thisRef.settingsDao.fetch(name, default)
+            }
+        return value as Int
     }
 
     override fun setValue(thisRef: DBConfig, property: KProperty<*>, value: Int) {
         synchronized(this) {
             this.value = value
         }
-        thisRef.settingsDao.put(name, value)
-            .subscribeOn(Schedulers.io())
-            .subscribe()
+        GlobalScope.launch {
+            thisRef.settingsDao.put(name, value)
+        }
     }
 }
 
@@ -77,7 +81,9 @@ class DBStringsValue(
     @Synchronized
     override fun getValue(thisRef: DBConfig, property: KProperty<*>): String {
         if (value == null)
-            value = thisRef.stringDao.fetch(name, default).blockingGet()
+            value = runBlocking {
+                thisRef.stringDao.fetch(name, default)
+            }
         return value!!
     }
 
@@ -87,19 +93,23 @@ class DBStringsValue(
         }
         if (value.isEmpty()) {
             if (sync) {
-                thisRef.stringDao.delete(name).blockingAwait()
+                runBlocking {
+                    thisRef.stringDao.delete(name)
+                }
             } else {
-                thisRef.stringDao.delete(name)
-                    .subscribeOn(Schedulers.io())
-                    .subscribe()
+                GlobalScope.launch {
+                    thisRef.stringDao.delete(name)
+                }
             }
         } else {
             if (sync) {
-                thisRef.stringDao.put(name, value).blockingAwait()
+                runBlocking {
+                    thisRef.stringDao.put(name, value)
+                }
             } else {
-                thisRef.stringDao.put(name, value)
-                    .subscribeOn(Schedulers.io())
-                    .subscribe()
+                GlobalScope.launch {
+                    thisRef.stringDao.put(name, value)
+                }
             }
         }
     }
diff --git a/app/src/main/java/com/topjohnwu/magisk/data/repository/LogRepository.kt b/app/src/main/java/com/topjohnwu/magisk/data/repository/LogRepository.kt
index 984f4abe1..8b88f98f3 100644
--- a/app/src/main/java/com/topjohnwu/magisk/data/repository/LogRepository.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/data/repository/LogRepository.kt
@@ -2,19 +2,18 @@ package com.topjohnwu.magisk.data.repository
 
 import com.topjohnwu.magisk.core.Const
 import com.topjohnwu.magisk.data.database.SuLogDao
+import com.topjohnwu.magisk.extensions.await
 import com.topjohnwu.magisk.model.entity.MagiskLog
 import com.topjohnwu.superuser.Shell
-import io.reactivex.Completable
-import io.reactivex.Single
 
 
 class LogRepository(
     private val logDao: SuLogDao
 ) {
 
-    fun fetchLogs() = logDao.fetchAll()
+    suspend fun fetchSuLogs() = logDao.fetchAll()
 
-    fun fetchMagiskLogs() = Single.fromCallable {
+    suspend fun fetchMagiskLogs(): String {
         val list = object : AbstractMutableList<String>() {
             val buf = StringBuilder()
             override val size get() = 0
@@ -28,16 +27,15 @@ class LogRepository(
                 }
             }
         }
-        Shell.su("cat ${Const.MAGISK_LOG}").to(list).exec()
-        list.buf.toString()
+        Shell.su("cat ${Const.MAGISK_LOG}").to(list).await()
+        return list.buf.toString()
     }
 
-    fun clearLogs() = logDao.deleteAll()
+    suspend fun clearLogs() = logDao.deleteAll()
 
-    fun clearMagiskLogs() = Completable.fromAction {
-        Shell.su("echo -n > ${Const.MAGISK_LOG}").exec()
-    }
+    fun clearMagiskLogs(cb: (Shell.Result) -> Unit) =
+        Shell.su("echo -n > ${Const.MAGISK_LOG}").submit(cb)
 
-    fun insert(log: MagiskLog) = logDao.insert(log)
+    suspend fun insert(log: MagiskLog) = logDao.insert(log)
 
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/data/repository/MagiskRepository.kt b/app/src/main/java/com/topjohnwu/magisk/data/repository/MagiskRepository.kt
index 4ffe3c648..d9a300c6b 100644
--- a/app/src/main/java/com/topjohnwu/magisk/data/repository/MagiskRepository.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/data/repository/MagiskRepository.kt
@@ -4,55 +4,58 @@ import android.content.pm.PackageManager
 import com.topjohnwu.magisk.core.Config
 import com.topjohnwu.magisk.core.Info
 import com.topjohnwu.magisk.data.network.GithubRawServices
+import com.topjohnwu.magisk.extensions.await
 import com.topjohnwu.magisk.extensions.getLabel
 import com.topjohnwu.magisk.extensions.packageName
-import com.topjohnwu.magisk.extensions.toSingle
 import com.topjohnwu.magisk.model.entity.HideAppInfo
 import com.topjohnwu.magisk.model.entity.HideTarget
 import com.topjohnwu.superuser.Shell
-import io.reactivex.Single
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import timber.log.Timber
+import java.io.IOException
 
 class MagiskRepository(
-        private val apiRaw: GithubRawServices,
-        private val packageManager: PackageManager
+    private val apiRaw: GithubRawServices,
+    private val packageManager: PackageManager
 ) {
 
     fun fetchSafetynet() = apiRaw.fetchSafetynet()
 
-    fun fetchUpdate() = when (Config.updateChannel) {
-        Config.Value.DEFAULT_CHANNEL, Config.Value.STABLE_CHANNEL -> apiRaw.fetchStableUpdate()
-        Config.Value.BETA_CHANNEL -> apiRaw.fetchBetaUpdate()
-        Config.Value.CANARY_CHANNEL -> apiRaw.fetchCanaryUpdate()
-        Config.Value.CUSTOM_CHANNEL -> apiRaw.fetchCustomUpdate(Config.customChannelUrl)
-        else -> throw IllegalArgumentException()
-    }.flatMap {
-        // If remote version is lower than current installed, try switching to beta
-        if (it.magisk.versionCode < Info.env.magiskVersionCode
-                && Config.updateChannel == Config.Value.DEFAULT_CHANNEL) {
-            Config.updateChannel = Config.Value.BETA_CHANNEL
-            apiRaw.fetchBetaUpdate()
-        } else {
-            Single.just(it)
+    suspend fun fetchUpdate() = try {
+        var info = when (Config.updateChannel) {
+            Config.Value.DEFAULT_CHANNEL, Config.Value.STABLE_CHANNEL -> apiRaw.fetchStableUpdate()
+            Config.Value.BETA_CHANNEL -> apiRaw.fetchBetaUpdate()
+            Config.Value.CANARY_CHANNEL -> apiRaw.fetchCanaryUpdate()
+            Config.Value.CUSTOM_CHANNEL -> apiRaw.fetchCustomUpdate(Config.customChannelUrl)
+            else -> throw IllegalArgumentException()
         }
-    }.doOnSuccess { Info.remote = it }
+        if (info.magisk.versionCode < Info.env.magiskVersionCode &&
+            Config.updateChannel == Config.Value.DEFAULT_CHANNEL) {
+            Config.updateChannel = Config.Value.BETA_CHANNEL
+            info = apiRaw.fetchBetaUpdate()
+        }
+        Info.remote = info
+        info
+    } catch (e: IOException) {
+        Timber.e(e)
+        null
+    }
 
-    fun fetchApps() =
-        Single.fromCallable { packageManager.getInstalledApplications(0) }
-            .flattenAsFlowable { it }
-            .filter { it.enabled && !blacklist.contains(it.packageName) }
-            .map {
-                val label = it.getLabel(packageManager)
-                val icon = it.loadIcon(packageManager)
-                HideAppInfo(it, label, icon)
-            }
-            .filter { it.processes.isNotEmpty() }
-            .toList()
+    suspend fun fetchApps() = withContext(Dispatchers.Default) {
+        packageManager.getInstalledApplications(0).filter {
+            it.enabled && !blacklist.contains(it.packageName)
+        }.map {
+            val label = it.getLabel(packageManager)
+            val icon = it.loadIcon(packageManager)
+            HideAppInfo(it, label, icon)
+        }.filter { it.processes.isNotEmpty() }
+    }
 
-    fun fetchHideTargets() = Shell.su("magiskhide --ls").toSingle()
-        .map { it.exec().out }
-        .flattenAsFlowable { it }
-        .map { HideTarget(it) }
-        .toList()
+    suspend fun fetchHideTargets() =
+        Shell.su("\"magiskhide --ls\"").await().out.map {
+            HideTarget(it)
+        }
 
     fun toggleHide(isEnabled: Boolean, packageName: String, process: String) =
         Shell.su("magiskhide --${isEnabled.state} $packageName $process").submit()
diff --git a/app/src/main/java/com/topjohnwu/magisk/di/ApplicationModule.kt b/app/src/main/java/com/topjohnwu/magisk/di/ApplicationModule.kt
index 0963a0680..b9014913f 100644
--- a/app/src/main/java/com/topjohnwu/magisk/di/ApplicationModule.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/di/ApplicationModule.kt
@@ -2,7 +2,6 @@ package com.topjohnwu.magisk.di
 
 import android.content.Context
 import android.os.Build
-import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import androidx.preference.PreferenceManager
 import com.topjohnwu.magisk.core.ResMgr
 import com.topjohnwu.magisk.utils.RxBus
@@ -19,7 +18,6 @@ val applicationModule = module {
     factory(Protected) { createDEContext(get()) }
     single(SUTimeout) { get<Context>(Protected).getSharedPreferences("su_timeout", 0) }
     single { PreferenceManager.getDefaultSharedPreferences(get<Context>(Protected)) }
-    single { LocalBroadcastManager.getInstance(get()) }
 }
 
 private fun createDEContext(context: Context): Context {
diff --git a/app/src/main/java/com/topjohnwu/magisk/extensions/XSU.kt b/app/src/main/java/com/topjohnwu/magisk/extensions/XSU.kt
index fa93fa1bf..b6cce5211 100644
--- a/app/src/main/java/com/topjohnwu/magisk/extensions/XSU.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/extensions/XSU.kt
@@ -4,6 +4,8 @@ import com.topjohnwu.magisk.core.Info
 import com.topjohnwu.superuser.Shell
 import com.topjohnwu.superuser.io.SuFileInputStream
 import com.topjohnwu.superuser.io.SuFileOutputStream
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
 import java.io.File
 
 fun reboot(reason: String = if (Info.recovery) "recovery" else "") {
@@ -14,3 +16,5 @@ fun File.suOutputStream() = SuFileOutputStream(this)
 fun File.suInputStream() = SuFileInputStream(this)
 
 val hasRoot get() = Shell.rootAccess()
+
+suspend fun Shell.Job.await() = withContext(Dispatchers.IO) { exec() }
diff --git a/app/src/main/java/com/topjohnwu/magisk/model/entity/HideTarget.kt b/app/src/main/java/com/topjohnwu/magisk/model/entity/HideTarget.kt
index 27573783c..bd8f1425f 100644
--- a/app/src/main/java/com/topjohnwu/magisk/model/entity/HideTarget.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/model/entity/HideTarget.kt
@@ -2,9 +2,13 @@ package com.topjohnwu.magisk.model.entity
 
 class HideTarget(line: String) {
 
-    private val split = line.split(Regex("\\|"), 2)
+    val packageName: String
+    val process: String
 
-    val packageName = split[0]
-    val process = split.getOrElse(1) { packageName }
+    init {
+        val split = line.split(Regex("\\|"), 2)
+        packageName = split[0]
+        process = split.getOrElse(1) { packageName }
+    }
 
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/base/BaseViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/base/BaseViewModel.kt
index 05b17d9f0..58ae55d7e 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/base/BaseViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/base/BaseViewModel.kt
@@ -4,6 +4,7 @@ import android.Manifest
 import androidx.annotation.CallSuper
 import androidx.core.graphics.Insets
 import androidx.databinding.Bindable
+import androidx.databinding.Observable
 import androidx.databinding.ObservableField
 import androidx.databinding.PropertyChangeRegistry
 import androidx.lifecycle.LiveData
@@ -13,23 +14,18 @@ import androidx.navigation.NavDirections
 import com.topjohnwu.magisk.BR
 import com.topjohnwu.magisk.core.Info
 import com.topjohnwu.magisk.core.base.BaseActivity
-import com.topjohnwu.magisk.extensions.doOnSubscribeUi
 import com.topjohnwu.magisk.extensions.value
 import com.topjohnwu.magisk.model.events.*
 import com.topjohnwu.magisk.model.navigation.NavigationWrapper
 import com.topjohnwu.magisk.model.observer.Observer
-import io.reactivex.*
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.disposables.Disposable
-import io.reactivex.subjects.PublishSubject
 import kotlinx.coroutines.Job
 import org.koin.core.KoinComponent
-import androidx.databinding.Observable as BindingObservable
 
 abstract class BaseViewModel(
-    initialState: State = State.LOADING,
-    val useRx: Boolean = true
-) : ViewModel(), BindingObservable, KoinComponent {
+    initialState: State = State.LOADING
+) : ViewModel(), Observable, KoinComponent {
 
     enum class State {
         LOADED, LOADING, LOADING_FAILED
@@ -53,8 +49,8 @@ abstract class BaseViewModel(
     private val _viewEvents = MutableLiveData<ViewEvent>()
     private var runningTask: Disposable? = null
     private var runningJob: Job? = null
-    private val refreshCallback = object : androidx.databinding.Observable.OnPropertyChangedCallback() {
-        override fun onPropertyChanged(sender: androidx.databinding.Observable?, propertyId: Int) {
+    private val refreshCallback = object : Observable.OnPropertyChangedCallback() {
+        override fun onPropertyChanged(sender: Observable?, propertyId: Int) {
             requestRefresh()
         }
     }
@@ -66,13 +62,6 @@ abstract class BaseViewModel(
     /** This should probably never be called manually, it's called manually via delegate. */
     @Synchronized
     fun requestRefresh() {
-        if (useRx) {
-            if (runningTask?.isDisposed?.not() == true) {
-                return
-            }
-            runningTask = rxRefresh()
-            return
-        }
         if (runningJob?.isActive == true) {
             return
         }
@@ -100,11 +89,6 @@ abstract class BaseViewModel(
         ViewActionEvent(action).publish()
     }
 
-    fun withPermissions(vararg permissions: String): Observable<Boolean> {
-        val subject = PublishSubject.create<Boolean>()
-        return subject.doOnSubscribeUi { RxPermissionEvent(permissions.toList(), subject).publish() }
-    }
-
     fun withPermissions(vararg permissions: String, callback: (Boolean) -> Unit) {
         PermissionEvent(permissions.toList(), callback).publish()
     }
@@ -137,7 +121,7 @@ abstract class BaseViewModel(
     private var callbacks: PropertyChangeRegistry? = null
 
     @Synchronized
-    override fun addOnPropertyChangedCallback(callback: BindingObservable.OnPropertyChangedCallback) {
+    override fun addOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
         if (callbacks == null) {
             callbacks = PropertyChangeRegistry()
         }
@@ -145,7 +129,7 @@ abstract class BaseViewModel(
     }
 
     @Synchronized
-    override fun removeOnPropertyChangedCallback(callback: BindingObservable.OnPropertyChangedCallback) {
+    override fun removeOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
         callbacks?.remove(callback)
     }
 
@@ -168,63 +152,4 @@ abstract class BaseViewModel(
         callbacks?.notifyCallbacks(this, fieldId, null)
     }
 
-    //region Rx
-    protected fun <T> Observable<T>.applyViewModel(viewModel: BaseViewModel, allowFinishing: Boolean = true) =
-        doOnSubscribe { viewModel.state =
-            State.LOADING
-        }
-            .doOnError { viewModel.state =
-                State.LOADING_FAILED
-            }
-            .doOnNext { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-
-    protected fun <T> Single<T>.applyViewModel(viewModel: BaseViewModel, allowFinishing: Boolean = true) =
-        doOnSubscribe { viewModel.state =
-            State.LOADING
-        }
-            .doOnError { viewModel.state =
-                State.LOADING_FAILED
-            }
-            .doOnSuccess { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-
-    protected fun <T> Maybe<T>.applyViewModel(viewModel: BaseViewModel, allowFinishing: Boolean = true) =
-        doOnSubscribe { viewModel.state =
-            State.LOADING
-        }
-            .doOnError { viewModel.state =
-                State.LOADING_FAILED
-            }
-            .doOnComplete { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-            .doOnSuccess { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-
-    protected fun <T> Flowable<T>.applyViewModel(viewModel: BaseViewModel, allowFinishing: Boolean = true) =
-        doOnSubscribe { viewModel.state =
-            State.LOADING
-        }
-            .doOnError { viewModel.state =
-                State.LOADING_FAILED
-            }
-            .doOnNext { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-
-    protected fun Completable.applyViewModel(viewModel: BaseViewModel, allowFinishing: Boolean = true) =
-        doOnSubscribe { viewModel.state =
-            State.LOADING
-        }
-            .doOnError { viewModel.state =
-                State.LOADING_FAILED
-            }
-            .doOnComplete { if (allowFinishing) viewModel.state =
-                State.LOADED
-            }
-    //endregion
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/flash/FlashViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/flash/FlashViewModel.kt
index f3d71b2e6..69a9e8c38 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/flash/FlashViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/flash/FlashViewModel.kt
@@ -1,6 +1,5 @@
 package com.topjohnwu.magisk.ui.flash
 
-import android.Manifest
 import android.content.res.Resources
 import android.net.Uri
 import android.view.MenuItem
@@ -21,7 +20,9 @@ import com.topjohnwu.magisk.ui.base.BaseViewModel
 import com.topjohnwu.magisk.ui.base.diffListOf
 import com.topjohnwu.magisk.ui.base.itemBindingOf
 import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import java.io.File
 import java.util.*
 
@@ -96,25 +97,23 @@ class FlashViewModel(
         return true
     }
 
-    private fun savePressed() = withPermissions(
-        Manifest.permission.READ_EXTERNAL_STORAGE,
-        Manifest.permission.WRITE_EXTERNAL_STORAGE
-    )
-        .map { now }
-        .map { it.toTime(timeFormatStandard) }
-        .map { Const.MAGISK_INSTALL_LOG_FILENAME.format(it) }
-        .map { File(Config.downloadDirectory, it) }
-        .map { file ->
-            file.bufferedWriter().use { writer ->
-                logItems.forEach {
-                    writer.write(it)
-                    writer.newLine()
+    private fun savePressed() = withExternalRW {
+        if (!it)
+            return@withExternalRW
+        viewModelScope.launch {
+            val name = Const.MAGISK_INSTALL_LOG_FILENAME.format(now.toTime(timeFormatStandard))
+            val file = File(Config.downloadDirectory, name)
+            withContext(Dispatchers.IO) {
+                file.bufferedWriter().use { writer ->
+                    logItems.forEach {
+                        writer.write(it)
+                        writer.newLine()
+                    }
                 }
             }
-            file.path
+            SnackbarEvent(file.path).publish()
         }
-        .subscribeK { SnackbarEvent(it).publish() }
-        .add()
+    }
 
     fun restartPressed() = reboot()
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/hide/HideViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/hide/HideViewModel.kt
index 7aa3fc040..1d9a5c5f3 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/hide/HideViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/hide/HideViewModel.kt
@@ -3,10 +3,10 @@ package com.topjohnwu.magisk.ui.hide
 import android.content.pm.ApplicationInfo
 import androidx.databinding.Bindable
 import androidx.databinding.ObservableField
+import androidx.lifecycle.viewModelScope
 import com.topjohnwu.magisk.BR
 import com.topjohnwu.magisk.core.utils.currentLocale
 import com.topjohnwu.magisk.data.repository.MagiskRepository
-import com.topjohnwu.magisk.extensions.subscribeK
 import com.topjohnwu.magisk.extensions.value
 import com.topjohnwu.magisk.model.entity.HideAppInfo
 import com.topjohnwu.magisk.model.entity.HideTarget
@@ -18,6 +18,9 @@ import com.topjohnwu.magisk.ui.base.BaseViewModel
 import com.topjohnwu.magisk.ui.base.Queryable
 import com.topjohnwu.magisk.ui.base.filterableListOf
 import com.topjohnwu.magisk.ui.base.itemBindingOf
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 
 class HideViewModel(
     private val magiskRepo: MagiskRepository
@@ -50,19 +53,18 @@ class HideViewModel(
 
     val isFilterExpanded = ObservableField(false)
 
-    override fun rxRefresh() = magiskRepo.fetchApps()
-        .map { it to magiskRepo.fetchHideTargets().blockingGet() }
-        .map { pair -> pair.first.map { mergeAppTargets(it, pair.second) } }
-        .flattenAsFlowable { it }
-        .map { HideItem(it) }
-        .toList()
-        .map { it.sort() }
-        .map { it to items.calculateDiff(it) }
-        .applyViewModel(this)
-        .subscribeK {
-            items.update(it.first, it.second)
-            submitQuery()
+    override fun refresh() = viewModelScope.launch {
+        state = State.LOADING
+        val apps = magiskRepo.fetchApps()
+        val hides = magiskRepo.fetchHideTargets()
+        val (hidden, diff) = withContext(Dispatchers.Default) {
+            val hidden = apps.map { mergeAppTargets(it, hides) }.map { HideItem(it) }.sort()
+            hidden to items.calculateDiff(hidden)
         }
+        items.update(hidden, diff)
+        submitQuery()
+        state = State.LOADED
+    }
 
     // ---
 
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt
index 7fe4a75be..3751027b2 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt
@@ -1,8 +1,8 @@
 package com.topjohnwu.magisk.ui.home
 
-import android.Manifest
 import android.os.Build
 import androidx.databinding.ObservableField
+import androidx.lifecycle.viewModelScope
 import com.topjohnwu.magisk.BuildConfig
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.core.Config
@@ -11,9 +11,11 @@ import com.topjohnwu.magisk.core.base.BaseActivity
 import com.topjohnwu.magisk.core.download.RemoteFileService
 import com.topjohnwu.magisk.core.model.MagiskJson
 import com.topjohnwu.magisk.core.model.ManagerJson
-import com.topjohnwu.magisk.core.model.UpdateInfo
 import com.topjohnwu.magisk.data.repository.MagiskRepository
-import com.topjohnwu.magisk.extensions.*
+import com.topjohnwu.magisk.extensions.await
+import com.topjohnwu.magisk.extensions.packageName
+import com.topjohnwu.magisk.extensions.res
+import com.topjohnwu.magisk.extensions.value
 import com.topjohnwu.magisk.model.entity.internal.DownloadSubject.Manager
 import com.topjohnwu.magisk.model.entity.recycler.DeveloperItem
 import com.topjohnwu.magisk.model.entity.recycler.HomeItem
@@ -26,6 +28,7 @@ import com.topjohnwu.magisk.model.events.dialog.UninstallDialog
 import com.topjohnwu.magisk.ui.base.BaseViewModel
 import com.topjohnwu.magisk.ui.base.itemBindingOf
 import com.topjohnwu.superuser.Shell
+import kotlinx.coroutines.launch
 import me.tatarka.bindingcollectionadapter2.BR
 import kotlin.math.roundToInt
 
@@ -72,27 +75,29 @@ class HomeViewModel(
         }
     }
 
-    override fun rxRefresh() = repoMagisk.fetchUpdate()
-        .onErrorReturn { null }
-        .subscribeK { it?.updateUI() }
+    override fun refresh() = viewModelScope.launch {
+        repoMagisk.fetchUpdate()?.apply {
+            stateMagisk.value = when {
+                !Info.env.isActive -> MagiskState.NOT_INSTALLED
+                magisk.isObsolete -> MagiskState.OBSOLETE
+                else -> MagiskState.UP_TO_DATE
+            }
 
-    private fun UpdateInfo.updateUI() {
-        stateMagisk.value = when {
-            !Info.env.isActive -> MagiskState.NOT_INSTALLED
-            magisk.isObsolete -> MagiskState.OBSOLETE
-            else -> MagiskState.UP_TO_DATE
+            stateManager.value = when {
+                !app.isUpdateChannelCorrect && isConnected.value -> MagiskState.NOT_INSTALLED
+                app.isObsolete -> MagiskState.OBSOLETE
+                else -> MagiskState.UP_TO_DATE
+            }
+
+            stateMagiskRemoteVersion.value =
+                "${magisk.version} (${magisk.versionCode})"
+            stateManagerRemoteVersion.value =
+                "${app.version} (${app.versionCode}) (${stub.versionCode})"
+
+            launch {
+                ensureEnv()
+            }
         }
-
-        stateManager.value = when {
-            !app.isUpdateChannelCorrect && isConnected.value -> MagiskState.NOT_INSTALLED
-            app.isObsolete -> MagiskState.OBSOLETE
-            else -> MagiskState.UP_TO_DATE
-        }
-
-        stateMagiskRemoteVersion.value = "${magisk.version} (${magisk.versionCode})"
-        stateManagerRemoteVersion.value = "${app.version} (${app.versionCode}) (${stub.versionCode})"
-
-        ensureEnv()
     }
 
     val showTest = false
@@ -109,19 +114,18 @@ class HomeViewModel(
 
     fun onManagerPressed() = ManagerInstallDialog().publish()
 
-    fun onMagiskPressed() = withPermissions(
-        Manifest.permission.READ_EXTERNAL_STORAGE,
-        Manifest.permission.WRITE_EXTERNAL_STORAGE
-    ).map { check(it);it }
-        .subscribeK { HomeFragmentDirections.actionHomeFragmentToInstallFragment().publish() }
-        .add()
+    fun onMagiskPressed() = withExternalRW {
+        if (it) {
+            HomeFragmentDirections.actionHomeFragmentToInstallFragment().publish()
+        }
+    }
 
     fun hideNotice() {
         Config.safetyNotice = false
         isNoticeVisible.value = false
     }
 
-    private fun ensureEnv() {
+    private suspend fun ensureEnv() {
         val invalidStates = listOf(
             MagiskState.NOT_INSTALLED,
             MagiskState.LOADING
@@ -138,21 +142,18 @@ class HomeViewModel(
             return
         }
 
-        Shell.su("env_check")
-            .toSingle()
-            .map { it.exec() }
-            .filter { !it.isSuccess }
-            .subscribeK {
-                shownDialog = true
-                EnvFixDialog().publish()
-            }
+        val result = Shell.su("env_check").await()
+        if (!result.isSuccess) {
+            shownDialog = true
+            EnvFixDialog().publish()
+        }
     }
 
     private val MagiskJson.isObsolete
         get() = Info.env.isActive && Info.env.magiskVersionCode < versionCode
-    val ManagerJson.isUpdateChannelCorrect
+    private val ManagerJson.isUpdateChannelCorrect
         get() = versionCode > 0
-    val ManagerJson.isObsolete
+    private val ManagerJson.isObsolete
         get() = BuildConfig.VERSION_CODE < versionCode
 
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/log/LogViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/log/LogViewModel.kt
index a2b7fb818..4fb1bfaf2 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/log/LogViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/log/LogViewModel.kt
@@ -1,12 +1,12 @@
 package com.topjohnwu.magisk.ui.log
 
 import androidx.databinding.ObservableField
+import androidx.lifecycle.viewModelScope
 import com.topjohnwu.magisk.BR
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.core.Config
 import com.topjohnwu.magisk.core.Const
 import com.topjohnwu.magisk.data.repository.LogRepository
-import com.topjohnwu.magisk.extensions.subscribeK
 import com.topjohnwu.magisk.extensions.value
 import com.topjohnwu.magisk.model.entity.recycler.LogItem
 import com.topjohnwu.magisk.model.entity.recycler.TextItem
@@ -15,12 +15,10 @@ import com.topjohnwu.magisk.ui.base.BaseViewModel
 import com.topjohnwu.magisk.ui.base.diffListOf
 import com.topjohnwu.magisk.ui.base.itemBindingOf
 import com.topjohnwu.superuser.Shell
-import io.reactivex.Completable
-import io.reactivex.android.schedulers.AndroidSchedulers
-import io.reactivex.disposables.Disposable
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.*
 import timber.log.Timber
 import java.io.File
+import java.io.IOException
 import java.util.*
 
 class LogViewModel(
@@ -43,28 +41,21 @@ class LogViewModel(
 
     val consoleText = ObservableField(" ")
 
-    override fun rxRefresh(): Disposable {
-        val logs = repo.fetchLogs()
-            .map { it.map { LogItem(it) } }
-            .observeOn(Schedulers.computation())
-            .map { it to items.calculateDiff(it) }
-            .observeOn(AndroidSchedulers.mainThread())
-            .doOnSuccess {
-                items.firstOrNull()?.isTop = false
-                items.lastOrNull()?.isBottom = false
-
-                items.update(it.first, it.second)
-
-                items.firstOrNull()?.isTop = true
-                items.lastOrNull()?.isBottom = true
+    override fun refresh() = viewModelScope.launch {
+        consoleText.value = repo.fetchMagiskLogs()
+        val deferred = withContext(Dispatchers.Default) {
+            async {
+                val suLogs = repo.fetchSuLogs().map { LogItem(it) }
+                suLogs to items.calculateDiff(suLogs)
             }
-            .ignoreElement()
-
-        val console = repo.fetchMagiskLogs()
-            .doOnSuccess { consoleText.value = it }
-            .ignoreElement()
-
-        return Completable.merge(listOf(logs, console)).subscribeK()
+        }
+        delay(500)
+        val (suLogs, diff) = deferred.await()
+        items.firstOrNull()?.isTop = false
+        items.lastOrNull()?.isBottom = false
+        items.update(suLogs, diff)
+        items.firstOrNull()?.isTop = true
+        items.lastOrNull()?.isBottom = true
     }
 
     fun saveMagiskLog() {
@@ -76,10 +67,10 @@ class LogViewModel(
         )
 
         val logFile = File(Config.downloadDirectory, filename)
-        runCatching {
+        try {
             logFile.createNewFile()
-        }.onFailure {
-            Timber.e(it)
+        } catch (e: IOException) {
+            Timber.e(e)
             return
         }
 
@@ -88,18 +79,14 @@ class LogViewModel(
         }
     }
 
-    fun clearMagiskLog() = repo.clearMagiskLogs()
-        .subscribeK {
-            SnackbarEvent(R.string.logs_cleared).publish()
-            requestRefresh()
-        }
-        .add()
-
-    fun clearLog() = repo.clearLogs()
-        .subscribeK {
-            SnackbarEvent(R.string.logs_cleared).publish()
-            requestRefresh()
-        }
-        .add()
+    fun clearMagiskLog() = repo.clearMagiskLogs {
+        SnackbarEvent(R.string.logs_cleared).publish()
+        requestRefresh()
+    }
 
+    fun clearLog() = viewModelScope.launch {
+        repo.clearLogs()
+        SnackbarEvent(R.string.logs_cleared).publish()
+        requestRefresh()
+    }
 }
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/module/ModuleViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/module/ModuleViewModel.kt
index a162ce471..c84399c97 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/module/ModuleViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/module/ModuleViewModel.kt
@@ -47,7 +47,7 @@ class ModuleViewModel(
     private val repoName: RepoByNameDao,
     private val repoUpdated: RepoByUpdatedDao,
     private val repoUpdater: RepoUpdater
-) : BaseViewModel(useRx = false), Queryable {
+) : BaseViewModel(), Queryable {
 
     override val queryDelay = 1000L
     private var queryJob: Job? = null
diff --git a/app/src/main/java/com/topjohnwu/magisk/ui/superuser/SuperuserViewModel.kt b/app/src/main/java/com/topjohnwu/magisk/ui/superuser/SuperuserViewModel.kt
index 2bd394c39..f7be9b8cd 100644
--- a/app/src/main/java/com/topjohnwu/magisk/ui/superuser/SuperuserViewModel.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/ui/superuser/SuperuserViewModel.kt
@@ -3,6 +3,7 @@ package com.topjohnwu.magisk.ui.superuser
 import android.content.pm.PackageManager
 import android.content.res.Resources
 import androidx.databinding.ObservableArrayList
+import androidx.lifecycle.viewModelScope
 import com.topjohnwu.magisk.BR
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.core.magiskdb.PolicyDao
@@ -10,8 +11,6 @@ import com.topjohnwu.magisk.core.model.MagiskPolicy
 import com.topjohnwu.magisk.core.utils.BiometricHelper
 import com.topjohnwu.magisk.core.utils.currentLocale
 import com.topjohnwu.magisk.databinding.ComparableRvItem
-import com.topjohnwu.magisk.extensions.applySchedulers
-import com.topjohnwu.magisk.extensions.subscribeK
 import com.topjohnwu.magisk.extensions.toggle
 import com.topjohnwu.magisk.model.entity.recycler.PolicyItem
 import com.topjohnwu.magisk.model.entity.recycler.TappableHeadlineItem
@@ -24,7 +23,9 @@ import com.topjohnwu.magisk.ui.base.BaseViewModel
 import com.topjohnwu.magisk.ui.base.adapterOf
 import com.topjohnwu.magisk.ui.base.diffListOf
 import com.topjohnwu.magisk.ui.base.itemBindingOf
-import io.reactivex.Single
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
 import me.tatarka.bindingcollectionadapter2.collections.MergeObservableList
 
 class SuperuserViewModel(
@@ -53,27 +54,23 @@ class SuperuserViewModel(
 
     // ---
 
-    override fun rxRefresh() = db.fetchAll()
-        .flattenAsFlowable { it }
-        .parallel()
-        .map { PolicyItem(it, it.applicationInfo.loadIcon(packageManager)) }
-        .sequential()
-        .sorted { o1, o2 ->
-            compareBy<PolicyItem>(
+    override fun refresh() = viewModelScope.launch {
+        state = State.LOADING
+        val (policies, diff) = withContext(Dispatchers.Default) {
+            val policies = db.fetchAll {
+                PolicyItem(it, it.applicationInfo.loadIcon(packageManager))
+            }.sortedWith(compareBy(
                 { it.item.appName.toLowerCase(currentLocale) },
                 { it.item.packageName }
-            ).compare(o1, o2)
+            ))
+            policies to itemsPolicies.calculateDiff(policies)
         }
-        .toList()
-        .map { it to itemsPolicies.calculateDiff(it) }
-        .applySchedulers()
-        .applyViewModel(this)
-        .subscribeK {
-            itemsPolicies.update(it.first, it.second)
-            if (itemsPolicies.isNotEmpty()) {
-                itemsHelpers.remove(itemNoData)
-            }
+        itemsPolicies.update(policies, diff)
+        if (itemsPolicies.isNotEmpty()) {
+            itemsHelpers.remove(itemNoData)
         }
+        state = State.LOADED
+    }
 
     // ---
 
@@ -91,14 +88,13 @@ class SuperuserViewModel(
         SuperuserFragmentDirections.actionSuperuserFragmentToHideFragment().publish()
 
     fun deletePressed(item: PolicyItem) {
-        fun updateState() = deletePolicy(item.item)
-            .subscribeK {
-                itemsPolicies.removeAll { it.genericItemSameAs(item) }
-                if (itemsPolicies.isEmpty() && itemsHelpers.isEmpty()) {
-                    itemsHelpers.add(itemNoData)
-                }
+        fun updateState() = viewModelScope.launch {
+            db.delete(item.item.uid)
+            itemsPolicies.removeAll { it.genericItemSameAs(item) }
+            if (itemsPolicies.isEmpty() && itemsHelpers.isEmpty()) {
+                itemsHelpers.add(itemNoData)
             }
-            .add()
+        }
 
         if (BiometricHelper.isEnabled) {
             BiometricDialog {
@@ -114,34 +110,37 @@ class SuperuserViewModel(
 
     //---
 
-    fun updatePolicy(it: PolicyUpdateEvent) = when (it) {
-        is PolicyUpdateEvent.Notification -> updatePolicy(it.item).map {
-            when {
-                it.notification -> R.string.su_snack_notif_on
-                else -> R.string.su_snack_notif_off
-            } to it.appName
+    fun updatePolicy(it: PolicyUpdateEvent) = viewModelScope.launch {
+        val snackStr = when (it) {
+            is PolicyUpdateEvent.Notification -> {
+                updatePolicy(it.item)
+                when {
+                    it.item.notification -> R.string.su_snack_notif_on
+                    else -> R.string.su_snack_notif_off
+                }
+            }
+            is PolicyUpdateEvent.Log -> {
+                updatePolicy(it.item)
+                when {
+                    it.item.logging -> R.string.su_snack_log_on
+                    else -> R.string.su_snack_log_off
+                }
+            }
         }
-        is PolicyUpdateEvent.Log -> updatePolicy(it.item).map {
-            when {
-                it.logging -> R.string.su_snack_log_on
-                else -> R.string.su_snack_log_off
-            } to it.appName
-        }
-    }.map { resources.getString(it.first, it.second) }
-        .subscribeK { SnackbarEvent(it).publish() }
-        .add()
+        SnackbarEvent(resources.getString(snackStr, it.item.appName)).publish()
+    }
 
     fun togglePolicy(item: PolicyItem, enable: Boolean) {
         fun updateState() {
             val policy = if (enable) MagiskPolicy.ALLOW else MagiskPolicy.DENY
             val app = item.item.copy(policy = policy)
 
-            updatePolicy(app)
-                .map { it.policy == MagiskPolicy.ALLOW }
-                .map { if (it) R.string.su_snack_grant else R.string.su_snack_deny }
-                .map { resources.getString(it).format(item.item.appName) }
-                .subscribeK { SnackbarEvent(it).publish() }
-                .add()
+            viewModelScope.launch {
+                updatePolicy(app)
+                val res = if (app.policy == MagiskPolicy.ALLOW) R.string.su_snack_grant
+                else R.string.su_snack_deny
+                SnackbarEvent(resources.getString(res).format(item.item.appName))
+            }
         }
 
         if (BiometricHelper.isEnabled) {
@@ -156,10 +155,6 @@ class SuperuserViewModel(
 
     //---
 
-    private fun updatePolicy(policy: MagiskPolicy) =
-        db.update(policy).andThen(Single.just(policy))
-
-    private fun deletePolicy(policy: MagiskPolicy) =
-        db.delete(policy.uid).andThen(Single.just(policy))
+    private suspend fun updatePolicy(policy: MagiskPolicy) = db.update(policy)
 
 }
diff --git a/build.gradle.kts b/build.gradle.kts
index 5ec7498f0..fc37df7d0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -60,7 +60,7 @@ subprojects {
             plugins.hasPlugin("com.android.application")) {
             android.apply {
                 compileSdkVersion(30)
-                buildToolsVersion = "30.0.0"
+                buildToolsVersion = "30.0.1"
 
                 defaultConfig {
                     if (minSdkVersion == null)