: Devices running Android 8 or higher generally cannot be downgraded to a lower version through standard system updates. Essential Technical Specs for Flashing Component Specification Processor Qualcomm Snapdragon 439 Base RAM/Storage 3GB / 32GB Model Code PD1930CF (Commonly associated with Y11/Y12i) OS Base Funtouch OS based on Android 9
If the device is still under warranty (unlikely for Y12i in 2025+), yes – unofficial flashing voids it. However, if you bricked the phone, vivo service centers will flash official 2021 firmware for a fee. vivo y12i firmware 2021
Go to Settings > System Update to automatically check for and install the latest available version. Recovery Mode (Manual): Download the official firmware from the vivo Support site . : Devices running Android 8 or higher generally