11 Exclusive - Downgrade Oneplus 9 To Android
To downgrade your to Android 11 (OxygenOS 11), you must follow a specific rollback procedure. This process is necessary because standard system update settings often lack a direct "downgrade" button.
pm disable-user --user 0 com.oneplus.opbackup
pm disable-user --user 0 com.oneplus.ota
Step 1: Source the Correct Rollback APK
Do not trust random torrents. Look for the file named:
Rollback-OTA-OnePlus9-OxygenOS-11.2.2.2.zip or similar (size ~3.5GB). downgrade oneplus 9 to android 11 exclusive
Conclusion
: Move photos, videos, and documents to a computer or cloud storage. Charge Your Device : Ensure your phone has at least 30%–50% battery to prevent it from shutting down during the process. Enable Developer Options Settings > About Device > Version and tap on Build Number seven times until "Developer mode" is active. 2. Download the Files You need two specific files: the Rollback Firmware Local Update APK To downgrade your to Android 11 (OxygenOS 11),
After downgrading your OnePlus 9 device to Android 11: Step 1: Source the Correct Rollback APK Do
The Pros (Why people do it)
- Original OxygenOS feel: Android 11 brings back the classic, clean OxygenOS launcher, alert slider customizations, and the beloved hidden space app drawer. No ColorOS bloat.
- Better battery for some: Many users report 6–7 hours of SOT on Android 11 vs. 4–5 on Android 13/14, especially with the original 65W charger optimization.
- Faster & smoother animations: No micro-stutters or delayed fingerprint reader—Android 11 on the OnePlus 9 feels snappier in daily navigation.
- Camera consistency: No over-processing or shutter lag; photos look more natural (though missing some newer features).
- Download MSM Download Tool for OnePlus 9 (specific to your region/model).
- Boot phone into EDL mode (power off → hold Vol Up + Vol Down → connect USB).
- Run MSM tool on PC, click “Verify” then “Start”.
- Wait 5–10 minutes. Phone will be restored to factory Android 11.
