Copy the downloaded .ozip rollback file (do not rename or extract it) to the of your phone's internal storage. Do not put it inside any folder (e.g., Downloads or Documents).
: You must use the rollback file that matches your specific model (IN, NA, or Europe). Step 1: Download Required Files Downgrade Oneplus 9 To Android 11
If your phone is stuck in a boot loop or the local update fails, use the MSM Download Tool on a Windows PC. Copy the downloaded
Skip through the initial setup, then use the OnePlus Switch app to restore your backup from the external drive. Downgrade Oneplus 9 To Android 11
If official links are down, check the latest community fixes on forums like Reddit or YouTube for mirrored workaround links .
