diff --git a/app/src/main/java/com/topjohnwu/magisk/model/download/DownloadService.kt b/app/src/main/java/com/topjohnwu/magisk/model/download/DownloadService.kt
index fa0df28b9..f3ccce9b8 100644
--- a/app/src/main/java/com/topjohnwu/magisk/model/download/DownloadService.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/model/download/DownloadService.kt
@@ -1,13 +1,11 @@
 package com.topjohnwu.magisk.model.download
 
-import android.Manifest
 import android.annotation.SuppressLint
 import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
 import android.os.Build
 import android.webkit.MimeTypeMap
-import androidx.annotation.RequiresPermission
 import androidx.core.app.NotificationCompat
 import com.topjohnwu.magisk.ClassMap
 import com.topjohnwu.magisk.R
@@ -115,7 +113,6 @@ open class DownloadService : RemoteFileService() {
 
     companion object {
 
-        @RequiresPermission(allOf = [Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE])
         inline operator fun invoke(context: Context, argBuilder: Builder.() -> Unit) {
             val builder = Builder().apply(argBuilder)
             val intent = Intent(context, ClassMap[DownloadService::class.java])
diff --git a/app/src/main/java/com/topjohnwu/magisk/model/entity/internal/DownloadSubject.kt b/app/src/main/java/com/topjohnwu/magisk/model/entity/internal/DownloadSubject.kt
index 1a72f6672..44f420414 100644
--- a/app/src/main/java/com/topjohnwu/magisk/model/entity/internal/DownloadSubject.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/model/entity/internal/DownloadSubject.kt
@@ -49,6 +49,17 @@ sealed class DownloadSubject : Parcelable {
             }
         }
 
+        @Parcelize
+        protected class Uninstall : Magisk() {
+            override val configuration: Configuration get() = Configuration.Uninstall
+            override val url: String get() = Info.remote.uninstaller.link
+
+            @IgnoredOnParcel
+            override val file by lazy {
+                get<Context>().cachedFile("uninstall.zip")
+            }
+        }
+
         @Parcelize
         protected class Download : Magisk() {
             override val configuration: Configuration get() = Configuration.Download
@@ -63,6 +74,7 @@ sealed class DownloadSubject : Parcelable {
         companion object {
             operator fun invoke(configuration: Configuration) = when (configuration) {
                 Configuration.Download -> Download()
+                Configuration.Uninstall -> Uninstall()
                 else -> Flash(configuration)
             }
         }
diff --git a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/InstallMethodDialog.kt b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/InstallMethodDialog.kt
index b003008fa..f2be2764f 100644
--- a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/InstallMethodDialog.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/InstallMethodDialog.kt
@@ -1,6 +1,5 @@
 package com.topjohnwu.magisk.view.dialogs
 
-import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Intent
 import android.net.Uri
@@ -29,16 +28,10 @@ internal class InstallMethodDialog(activity: MagiskActivity<*, *>, options: List
         }
     }
 
-    @SuppressLint("MissingPermission")
-    private fun flash(activity: MagiskActivity<*, *>) = activity.withExternalRW {
-        onSuccess {
-            DownloadService(context) {
-                subject = DownloadSubject.Magisk(Configuration.Flash.Primary)
-            }
-        }
+    private fun flash(activity: MagiskActivity<*, *>) = DownloadService(activity) {
+        subject = DownloadSubject.Magisk(Configuration.Flash.Primary)
     }
 
-    @SuppressLint("MissingPermission")
     private fun patchBoot(activity: MagiskActivity<*, *>) = activity.withExternalRW {
         onSuccess {
             Utils.toast(R.string.patch_file_msg, Toast.LENGTH_LONG)
@@ -56,7 +49,6 @@ internal class InstallMethodDialog(activity: MagiskActivity<*, *>, options: List
         }
     }
 
-    @SuppressLint("MissingPermission")
     private fun downloadOnly(activity: MagiskActivity<*, *>) = activity.withExternalRW {
         onSuccess {
             DownloadService(activity) {
@@ -65,7 +57,6 @@ internal class InstallMethodDialog(activity: MagiskActivity<*, *>, options: List
         }
     }
 
-    @SuppressLint("MissingPermission")
     private fun installInactiveSlot(activity: MagiskActivity<*, *>) {
         CustomAlertDialog(activity)
             .setTitle(R.string.warning)
diff --git a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/UninstallDialog.kt b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/UninstallDialog.kt
index fe474bb2b..8c7244172 100644
--- a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/UninstallDialog.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/UninstallDialog.kt
@@ -2,19 +2,14 @@ package com.topjohnwu.magisk.view.dialogs
 
 import android.app.Activity
 import android.app.ProgressDialog
-import android.content.Intent
-import android.net.Uri
 import android.widget.Toast
-import com.topjohnwu.magisk.ClassMap
-import com.topjohnwu.magisk.Const
 import com.topjohnwu.magisk.Info
 import com.topjohnwu.magisk.R
-import com.topjohnwu.magisk.ui.flash.FlashActivity
+import com.topjohnwu.magisk.model.download.DownloadService
+import com.topjohnwu.magisk.model.entity.internal.Configuration
+import com.topjohnwu.magisk.model.entity.internal.DownloadSubject
 import com.topjohnwu.magisk.utils.Utils
-import com.topjohnwu.magisk.view.ProgressNotification
-import com.topjohnwu.net.Networking
 import com.topjohnwu.superuser.Shell
-import java.io.File
 
 class UninstallDialog(activity: Activity) : CustomAlertDialog(activity) {
 
@@ -35,20 +30,10 @@ class UninstallDialog(activity: Activity) : CustomAlertDialog(activity) {
             }
         }
         if (Info.remote.uninstaller.link.isNotEmpty()) {
-            setPositiveButton(R.string.complete_uninstall) { d, i ->
-                val zip = File(activity.filesDir, "uninstaller.zip")
-                val progress = ProgressNotification(zip.name)
-                Networking.get(Info.remote.uninstaller.link)
-                        .setDownloadProgressListener(progress)
-                        .setErrorHandler { _, _ -> progress.dlFail() }
-                        .getAsFile(zip) { f ->
-                            progress.dismiss()
-                            val intent = Intent(activity, ClassMap[FlashActivity::class.java])
-                                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
-                                    .setData(Uri.fromFile(f))
-                                    .putExtra(Const.Key.FLASH_ACTION, Const.Value.UNINSTALL)
-                            activity.startActivity(intent)
-                        }
+            setPositiveButton(R.string.complete_uninstall) { _, _ ->
+                DownloadService(activity) {
+                    subject = DownloadSubject.Magisk(Configuration.Uninstall)
+                }
             }
         }
     }