Downgrade Oneplus 9 To Android 11

Yes, if:

No, if:

Have you downgraded your OnePlus 9? Share your experience in the comments. For official support, visit OnePlus Community forums. Downgrade Oneplus 9 To Android 11

Disclaimer: This guide is for informational purposes. The author and platform are not responsible for bricked devices, lost data, or voided warranties (though using official rollback packages does not void warranty). Always double-check your model number before proceeding.

If your OnePlus 9 is already bricked, stuck in a boot loop, or the local update method fails, you need the MSM Download Tool. This is a PC-based utility that flashes the phone back to factory Android 11. Yes, if:

Warning: This tool is for emergency use only. It wipes everything and restores the phone to exactly how it left the factory.

Fix: Go to Settings > Apps > App Management > Show System Apps > Search for "IMS" > Clear Data & Cache. Restart. No, if:

Downgrading a OnePlus 9 to Android 11 involves several steps and comes with risks, including potential data loss and issues with future software updates. Here's a general overview of the process:

Tap Install Now or Upgrade. The phone will reboot into recovery mode and begin installing Android 11.

Do not touch the phone during this process. You will see a progress bar. The screen may flicker – this is normal.