What data is needed to unlock Mi account
1. Both IMEI numbers. You can view it using the MiFlashPro software (any Mi account is fine),
set the device into the Recovery mode, connect and look at IMEI. If IMEI is empty – update / downgrade the firmware.
If it did not appear after the update / downgrade – disassemble the device, and the sticker with IMEI will be okay as well.
2. Photo of the locked screen with the unlock code. In order to display the unlock code, you need to press 10 (ten) times on the lock. After that, the unlock code appears. Examples:
3. Photo with the data of the old Mi account. Examples:
That is all.