Oneplus 9 To Android 11 Exclusive: Downgrade

The tool will detect the device as "Qualcomm HS-USB QDLoader 9008" and flash the factory Android 11 image. Oneplus 9 Pro | Downgrade to OXYGEN OS 11

(holding both volume buttons while plugging into a PC) to re-flash the stock Android 11 firmware directly to the hardware partitions. [CLOSED] Roll back - OnePlus Community downgrade oneplus 9 to android 11 exclusive

Newer versions of OxygenOS often hide or remove the "Local Upgrade" option from the settings menu. You may need to install the to restore this functionality. The tool will detect the device as "Qualcomm

Whether you’re missing the classic OxygenOS experience or troubleshooting bugs in newer versions, rolling back your downgrade oneplus 9 to android 11 exclusive

If your computer doesn’t detect your phone in EDL mode:

Users who just want to go back without advanced tinkering.