Oneplus 9 To Android 11 Exclusive — Downgrade

Chapter 1 — Prepare like a craftsman

OnePlus occasionally releases "rollback" packages that allow users to revert to previous versions via the stock recovery mode. downgrade oneplus 9 to android 11 exclusive

from your phone, so it is essential to perform a full backup before starting. OnePlus Community Method 1: Local Update (Official Rollback) Chapter 1 — Prepare like a craftsman OnePlus