Downgrade Oneplus — 9 To Android 11

How to Downgrade Your OnePlus 9 to Android 11 (OxygenOS 11) If you've updated your OnePlus 9 to Android 12 or 13 and found it buggy or simply prefer the classic OxygenOS experience, you can roll back to Android 11. This process is official but , so a full backup is essential before starting. Prerequisites

: Moving to an older version of Android requires a factory reset. Use cloud services or a computer to save your photos, contacts, and documents. Downgrade Oneplus 9 To Android 11

You’ve successfully downgraded to Android 11. Now, ensure your phone works perfectly. How to Downgrade Your OnePlus 9 to Android