11 Exclusive - Downgrade Oneplus 9 To Android

If you do not disable updates, your OnePlus 9 will immediately download Android 12 or 13 again overnight. Go to > System > System Updates . Tap the Gear Icon in the top right corner. Toggle OFF the "Auto-download over Wi-Fi" option.

Open the newly installed app (Local Update Tool). Tap the Gear icon located in the top right corner. Select Local Update .

Connect your OnePlus 9 to your computer and transfer the downloaded rollback .zip file directly to the Internal Storage root directory (do not put it inside any folder like Download or Documents). downgrade oneplus 9 to android 11 exclusive

Android 12 and Android 13 hide the local installation menu by default. Follow these steps to prepare your device:

to Android 11 (OxygenOS 11) is a common move for enthusiasts . However, this process is high-stakes; it will , so a full external backup is mandatory before you begin. Essential Pre-Flight Checklist If you do not disable updates, your OnePlus

Wait for the installation progress bar to hit 100%. Step 4: First Boot and Disabling Automatic Updates

The Android 11 installation file for your region. Toggle OFF the "Auto-download over Wi-Fi" option

The super partition must be erased and recreated using fastboot delete-logical-partition commands before flashing raw images.

Chapter 4 — Troubleshooting & survival tips

: Since modern OxygenOS versions hide the local upgrade option, you must install the OPLocalUpdate APK to perform the installation. 2. Prepare the Files