diff --git a/app/build.gradle b/app/build.gradle
index 89d2503ae..ace3175f4 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -27,7 +27,7 @@ android {
 
     productFlavors {
         full {
-            versionCode 130
+            versionCode 131
             versionName "5.8.3"
         }
         stub {
diff --git a/app/src/full/java/com/topjohnwu/magisk/components/InstallMethodDialog.java b/app/src/full/java/com/topjohnwu/magisk/components/InstallMethodDialog.java
index 8502ebb8a..16e902c72 100644
--- a/app/src/full/java/com/topjohnwu/magisk/components/InstallMethodDialog.java
+++ b/app/src/full/java/com/topjohnwu/magisk/components/InstallMethodDialog.java
@@ -58,9 +58,17 @@ class InstallMethodDialog extends AlertDialog.Builder {
                     activity.startActivity(intent);
                     break;
                 case 3:
-                    intent = new Intent(activity, FlashActivity.class)
-                            .putExtra(Const.Key.FLASH_ACTION, Const.Value.FLASH_INACTIVE_SLOT);
-                    activity.startActivity(intent);
+                    new CustomAlertDialog(activity)
+                            .setTitle(R.string.warning)
+                            .setMessage(R.string.install_inactive_slot_msg)
+                            .setCancelable(true)
+                            .setPositiveButton(R.string.yes, (d, i) -> {
+                                Intent it = new Intent(activity, FlashActivity.class)
+                                        .putExtra(Const.Key.FLASH_ACTION, Const.Value.FLASH_INACTIVE_SLOT);
+                                activity.startActivity(it);
+                            })
+                            .setNegativeButton(R.string.no_thanks, null)
+                            .show();
                     break;
                 default:
             }
diff --git a/app/src/full/res/values/strings.xml b/app/src/full/res/values/strings.xml
index 86c8ae264..74c185a66 100644
--- a/app/src/full/res/values/strings.xml
+++ b/app/src/full/res/values/strings.xml
@@ -100,6 +100,8 @@
     <string name="patch_boot_file">Patch Boot Image File</string>
     <string name="direct_install">Direct Install (Recommended)</string>
     <string name="install_inactive_slot">Install to Inactive Slot (After OTA)</string>
+    <string name="warning">Warning</string>
+    <string name="install_inactive_slot_msg">Your device will be FORCED to boot to the current inactive slot after a reboot!\nOnly use this option after OTA is done.\nContinue?</string>
     <string name="select_method">Select Method</string>
     <string name="no_boot_file_patch_support">Target Magisk version doesn\'t support boot image file patching</string>
     <string name="boot_file_patch_msg">Select stock boot image dump in .img or .img.tar format</string>