Downgrade Oneplus 9 To Android 11 May 2026

Before beginning, ensure you meet these requirements to avoid bricking your device:

If you're missing the stability or features of earlier OxygenOS versions, you can downgrade your Go to product viewer dialog for this item.

This is the standard method for users currently on a stable version of OxygenOS 12 or 13. Downgrade Oneplus 9 To Android 11

Move the file to the of your phone's internal storage (outside all folders). 2. Install the "Local Update" Tool

Download the specific rollback package for your region (IN, NA, or Europe). Before beginning, ensure you meet these requirements to

Enable these by going to Settings > About Device > Version and tapping "Build Number" seven times. How to Downgrade (Local Upgrade Method)

If it downloads as a .zip , rename it to before installing. 3. Execute the Rollback [CLOSED] Roll back - OnePlus Community How to Downgrade (Local Upgrade Method) If it

Ensure your phone is charged to at least 30% (60% is recommended) to prevent power loss during the flash.