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 028b5330f..b39764c9f 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
@@ -31,7 +31,11 @@ sealed class DownloadSubject : Parcelable {
     ) : DownloadSubject() {
 
         override val url: String get() = magisk.link
-        override val fileName get() = "Magisk-v${magisk.version}(${magisk.versionCode}).zip"
+        override val fileName get() =
+            if (configuration is Configuration.Flash)
+                "magisk.zip"
+            else
+                "Magisk-v${magisk.version}(${magisk.versionCode}).zip"
 
     }
 
diff --git a/app/src/main/java/com/topjohnwu/magisk/model/flash/Patching.kt b/app/src/main/java/com/topjohnwu/magisk/model/flash/Patching.kt
index e8e4bbd77..1973320bb 100644
--- a/app/src/main/java/com/topjohnwu/magisk/model/flash/Patching.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/model/flash/Patching.kt
@@ -9,7 +9,7 @@ sealed class Patching(
     private val console: MutableList<String>,
     logs: MutableList<String>,
     private val resultListener: FlashResultListener
-) : MagiskInstaller(console, logs, file) {
+) : MagiskInstaller(console, logs) {
 
     override fun onResult(success: Boolean) {
         if (success) {
diff --git a/app/src/main/java/com/topjohnwu/magisk/tasks/MagiskInstaller.java b/app/src/main/java/com/topjohnwu/magisk/tasks/MagiskInstaller.java
index 99fd005b3..2a5325a75 100644
--- a/app/src/main/java/com/topjohnwu/magisk/tasks/MagiskInstaller.java
+++ b/app/src/main/java/com/topjohnwu/magisk/tasks/MagiskInstaller.java
@@ -4,11 +4,13 @@ import android.net.Uri;
 import android.os.Build;
 import android.text.TextUtils;
 
+import androidx.annotation.MainThread;
+import androidx.annotation.WorkerThread;
+
 import com.topjohnwu.magisk.App;
 import com.topjohnwu.magisk.Const;
 import com.topjohnwu.magisk.Info;
 import com.topjohnwu.magisk.utils.Utils;
-import com.topjohnwu.net.DownloadProgressListener;
 import com.topjohnwu.net.Networking;
 import com.topjohnwu.signing.SignBoot;
 import com.topjohnwu.superuser.Shell;
@@ -38,55 +40,28 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
-import androidx.annotation.MainThread;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.WorkerThread;
-
 public abstract class MagiskInstaller {
 
     protected String srcBoot;
     protected File destFile;
     protected File installDir;
+    protected File zipFile = new File(App.self.getCacheDir(), "magisk.zip");
 
-    @Nullable
-    private final Uri preDownloadedFile;
     private final List<String> console;
     private final List<String> logs;
     private boolean isTar = false;
 
-    private class ProgressLog implements DownloadProgressListener {
-
-        private int prev = -1;
-        private int location;
-
-        @Override
-        public void onProgress(long bytesDownloaded, long totalBytes) {
-            if (prev < 0) {
-                location = console.size();
-                console.add("... 0%");
-            }
-            int curr = (int) (100 * bytesDownloaded / totalBytes);
-            if (prev != curr) {
-                prev = curr;
-                console.set(location, "... " + prev + "%");
-            }
-        }
-    }
-
     protected MagiskInstaller() {
         console = NOPList.getInstance();
         logs = NOPList.getInstance();
-        preDownloadedFile = null;
     }
 
-    public MagiskInstaller(List<String> out, List<String> err, @NonNull Uri magisk) {
+    public MagiskInstaller(List<String> out, List<String> err) {
         console = out;
         logs = err;
         installDir = new File(App.deContext.getFilesDir().getParent(), "install");
         Shell.sh("rm -rf " + installDir).exec();
         installDir.mkdirs();
-        preDownloadedFile = magisk;
     }
 
     protected boolean findImage() {
@@ -128,27 +103,9 @@ public abstract class MagiskInstaller {
 
         console.add("- Device platform: " + Build.CPU_ABI);
 
-        File zip = new File(App.self.getCacheDir(), "magisk.zip");
-        if (preDownloadedFile != null) {
-            console.add("- Using already downloaded file");
-
-            InstallerHelper.copyFileTo(preDownloadedFile, zip);
-        } else {
-            console.add("- Using legacy download method");
-
-            if (!ShellUtils.checkSum("MD5", zip, Info.remote.getMagisk().getHash())) {
-                console.add("- Downloading zip");
-                Networking.get(Info.remote.getMagisk().getLink())
-                        .setDownloadProgressListener(new ProgressLog())
-                        .execForFile(zip);
-            } else {
-                console.add("- Existing zip found");
-            }
-        }
-
         try {
             ZipInputStream zi = new ZipInputStream(new BufferedInputStream(
-                    new FileInputStream(zip), (int) zip.length()));
+                    new FileInputStream(zipFile), (int) zipFile.length()));
             ZipEntry ze;
             while ((ze = zi.getNextEntry()) != null) {
                 if (ze.isDirectory())
diff --git a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/EnvFixDialog.kt b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/EnvFixDialog.kt
index 521d61b27..7ee303395 100644
--- a/app/src/main/java/com/topjohnwu/magisk/view/dialogs/EnvFixDialog.kt
+++ b/app/src/main/java/com/topjohnwu/magisk/view/dialogs/EnvFixDialog.kt
@@ -3,11 +3,14 @@ package com.topjohnwu.magisk.view.dialogs
 import android.app.Activity
 import android.app.ProgressDialog
 import android.widget.Toast
+import com.topjohnwu.magisk.Info
 import com.topjohnwu.magisk.R
 import com.topjohnwu.magisk.tasks.MagiskInstaller
 import com.topjohnwu.magisk.utils.Utils
 import com.topjohnwu.magisk.utils.reboot
+import com.topjohnwu.net.Networking
 import com.topjohnwu.superuser.Shell
+import com.topjohnwu.superuser.ShellUtils
 import com.topjohnwu.superuser.internal.UiThreadHandler
 import com.topjohnwu.superuser.io.SuFile
 
@@ -25,6 +28,8 @@ class EnvFixDialog(activity: Activity) : CustomAlertDialog(activity) {
                 override fun operations(): Boolean {
                     installDir = SuFile("/data/adb/magisk")
                     Shell.su("rm -rf /data/adb/magisk/*").exec()
+                    if (!ShellUtils.checkSum("MD5", zipFile, Info.remote.magisk.hash))
+                        Networking.get(Info.remote.magisk.link).execForFile(zipFile)
                     return extractZip() && Shell.su("fix_env").exec().isSuccess
                 }