Downgrade Oneplus 9 To Android 11 Exclusive !new! <PREMIUM ✔>

Wait for the progress bar to reach 100%. Step 4: Initial Device Setup

Before you begin, make sure to:

Depending on which version of Android you are currently running (Android 12 or Android 13), the steps to trigger a local installation vary slightly because OnePlus removed the local upgrade option from standard settings in later versions. If you are on Android 12: Go to > System > System Updates . Tap the Gear Icon in the top right corner. Tap Local Upgrade . Select the rollback .zip file you pasted earlier. Tap Install Now and confirm. If you are on Android 13: downgrade oneplus 9 to android 11 exclusive

: Open the newly installed Local Update app, tap the gear icon, select your rollback package, and tap "Install Now". : Once finished, your phone will reboot into Android 11. Method 2: MSM Download Tool (Deep Rollback/Unbrick)

After completion, disconnect the USB cable and power on your OnePlus 9. The first boot will take 5–10 minutes as Android 11 initializes. Wait for the progress bar to reach 100%

: Using the MSM Tool is a more advanced process and requires careful attention. You assume full responsibility for your device.

Your device must see the file in a specific directory for the local upgrade system to detect it. Connect your OnePlus 9 to your computer using a USB cable. Tap the Gear Icon in the top right corner

: Move all photos, contacts, and documents to a PC or cloud storage, as the downgrade performs a mandatory factory reset.

Copy all personal files, photos, and app data to an external storage or cloud service, as the phone will be factory reset.