Downgrade Oneplus 9 To Android 11 Exclusive Official

Download and install the official . Grant the app storage permissions when prompted. Step 3: Flash the Android 11 Rollback Package

OxygenOS 11 represents the final iteration of the clean, lightweight, near-stock Android design that originally made OnePlus famous.

Go to Settings > About Device > Version and tap Build Number 7 times. Install the OnePlus Local Update APK: downgrade oneplus 9 to android 11 exclusive

To downgrade your OnePlus 9 to Android 11, follow these steps carefully:

(rename APK):

Go to Settings > About Device to confirm your exact regional model variation (e.g., North America, India, Europe, or Global). Required Files and Downloads

What is your exact (found in Settings > About Device)? Download and install the official

Here is the hard truth: Whether you use the local upgrade method or the MSM Download Tool, your internal storage will be erased. As noted by OnePlus community experts, rollback packages are designed specifically because “the upgrade method will erase all the contents of the phone, please be sure to backup first”.