Official Bootloader Unlock (UBL)
ubl168hmedium/5 steps
Apply via Xiaomi Community 00:00 GMT+8 + Mi Unlock 72-168h wait
Never re-lock while on custom ROM = hardbrick.
1
Apply on Xiaomi Community
Open Xiaomi Community app, apply at 00:00 GMT+8 daily. Limited quota.
2
Enable Developer Options
Settings → About Phone → tap OS version 7x → enable OEM Unlocking & USB Debugging.
3
Bind Account & Mi Unlock
Login same Xiaomi account on phone and Mi Unlock Tool (Windows). Hit Unlock, wait 72-168h timer.
4
Verify Unlock Status
Reboot to fastboot, check Settings → Developer Options → Mi Unlock status = Unlocked.
5
Never Re-lock on Custom ROM
Strict warning: re-locking while on custom ROM / rooted will hardbrick.
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