Copy all personal files, photos, and app data to an external storage or cloud service, as the phone will be factory reset.
Confirm the warning that all data will be erased and click . Finalize the Process : Wait for the installation to reach 100%.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. downgrade oneplus 9 to android 11 exclusive
Many OnePlus 9 users found that updating to Android 12 or Android 13 altered their device's user experience. The transition from the classic, lightweight OxygenOS to a codebase shared with Oppo's ColorOS changed the system's overall aesthetic and functionality.
Before proceeding, you must understand that downgrading is a clean-slate process. Copy all personal files, photos, and app data
Reclaims the optimized standby power draw and aggressive battery calibration found on early firmware versions.
Once you reach the OxygenOS 11 home screen, prevent the device from immediately downloading newer software versions: Go to > System > System Updates . Tap the Gear icon in the top right corner. Turn off Auto-download over Wi-Fi . Restore Your Backup This public link is valid for 7 days
Rollback Oneplus 6 & 6T from Oxygen OS 11.1.1.1 to Oxygen OS 10 Stable
While the has seen numerous updates through Android 12, 13, and 14, a growing segment of the community remains loyal to OxygenOS 11 . For many, Android 11 represents the last "true" OnePlus experience before the codebase merger with OPPO's ColorOS.