How to Downgrade MIUI 13 to 12 Using HP and PC: Definitely Successful

MIUI is the user interface used on Xiaomi products. Using the latest version of MIUI will improve the experience and provide a more modern appearance. But for certain reasons, I chose to downgrade by downgrading MIUI 13 to 12, mainly to avoid bugs. I have a Xiaomi Mi 11 Ultra China Version. Original China ROM was okay but in English and with ugly apps.