Downgrade Oneplus 9 To Android 11 Exclusive Access

python payload_dumper.py payload.bin

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Updating to the latest Android version does not always yield a better user experience. If you are facing severe battery drain, application crashes, or simply miss the clean aesthetics of OxygenOS 11, rolling back is your best option. downgrade oneplus 9 to android 11 exclusive

: Ensure your device is charged to at least 30% (though 60% is safer) to prevent a shutdown during flashing.

You get the original, cleaner, and faster interface without the heavy, Oppo-inspired OxygenOS 12+ look. python payload_dumper

Double-check your model number in Settings and download the matching NA, EU, or IN file. File is hidden in a folder or has the wrong extension.

If you decide that Android 12 or newer eventually becomes stable enough for your needs, you can always upgrade again. But for now, enjoy the speed, stability, and customization options of Android 11 on your OnePlus 9. You made the right choice. Can’t copy the link right now

With the release of Android 12 (ColorOS/OxygenOS merge), many OnePlus 9 users experienced degraded performance, camera processing changes, and thermal throttling. Unlike official downgrade methods (which only allow rollback to Android 12), reverting to requires bypassing OnePlus’s anti-rollback (ARB) protections and manually flashing the original firmware partitions.

Note: If the downloaded file ends in .jar , rename it to end in .zip .