Downgrade Oneplus 9 To Android 11 Jun 2026

Downgrading the Android 11 widely regarded by the community as a "stability restoration" move

Once downloaded, move the rollback ZIP file from your "Downloads" folder to the root directory of your phone's internal storage (not inside any folders). If the file ends in or has extra characters, rename it to end simply in Initiate the Rollback: OnePlus Local Update app you installed. Settings (gear) icon in the top-right corner. Downgrade Oneplus 9 To Android 11

Navigate back to (or About Device > OxygenOS ). Tap the three dots in the top right corner. Select Local Install . Downgrading the Android 11 widely regarded by the

If your phone fails to boot past the OnePlus logo after 15 minutes, turn off the device. Hold the Power and Volume Down buttons simultaneously to enter Recovery Mode. Select Wipe data and cache , perform a factory reset, and reboot the system. Navigate back to (or About Device > OxygenOS )

To prevent your phone from instantly upgrading back to Android 12 or 13, go to > System > System Updates . Tap the Gear Icon and toggle off Auto-download over Wi-Fi . Troubleshooting Common Issues