If you're missing the stability or features of earlier OxygenOS versions, you can downgrade your Go to product viewer dialog for this item.
Download the specific rollback package for your region (IN, NA, or Europe). Downgrade Oneplus 9 To Android 11
All data, including photos, contacts, and messages, will be permanently deleted. If you're missing the stability or features of
Enable these by going to Settings > About Device > Version and tapping "Build Number" seven times. How to Downgrade (Local Upgrade Method) or Europe). All data
If it downloads as a .zip , rename it to before installing. 3. Execute the Rollback [CLOSED] Roll back - OnePlus Community
Before beginning, ensure you meet these requirements to avoid bricking your device: