Hello, I want to sell my mi mix 3 and I would like to give it the original rom and remove the unlock. Someone did this manipulation thank you?
thank you google translate i'm very bad at english language
you can use the tool https://www.xiaomitool.com/V2/
in my opinion.
1 delete mi acount / google account.
2. wipe all data in twrp
3. install latest global stable.
4 wipe again.
5. test to start