Device name : Redmi 12 / 12R 5G / Redmi Note 12R / POCO M6 Pro 5G
Codename : sky
Speed up tips : All methods have been fixed, the end.
Bootloader : You need to unlock the bootloader if you want to flash a rom into your phone via fastboot method, and your data could be deleted as you choose, please make sure you have backed up your personal data.Apply for Bootloader Unlock here.
MIUI Rom : Yes , go to the MIUI site: Redmi 12 / 12R 5G / Redmi Note 12R / POCO M6 Pro 5G(sky) - MIUI Official ROMs