fastboot --disable-verity --disable-verification flash vbmeta vbmeta_mod.img fastboot erase metadata fastboot erase userdata
Whether you’re missing the classic OxygenOS experience or troubleshooting bugs in newer versions, rolling back your downgrade oneplus 9 to android 11 exclusive
Many users find that later versions of OxygenOS introduced "bloat" or UI changes that felt foreign to the brand's identity. Key reasons to consider the rollback include: Advanced Solutions for "Bricked" Devices Copy all personal
: After completion, the device reboots into recovery mode to perform a factory reset. After about 4 to 5 minutes of initial booting, the familiar Android 11 setup screen returns. Advanced Solutions for "Bricked" Devices downgrade oneplus 9 to android 11 exclusive
Copy all personal files, photos, and app data to an external storage or cloud service, as the phone will be factory reset.
Downgrading your device can have some risks and consequences, including:
If the rollback file ends in .jar , rename it to end in .zip .