Official methods remain the most stable for this device, though some AIO tools can automate the process. XiaoMiTool V2 Official Process : Involves enabling OEM Unlocking USB Debugging
Once in custom recovery, you can use the File Manager to delete cust.img or specific MIUI lock services if necessary (advanced users). Frequently Asked Questions redmi note 8 aio tool unlock bootloaderremove top
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After unlock completes, the phone will automatically and reboot. Set up the phone again (skip login for now). Official methods remain the most stable for this
This method is used when the above fails. It will remove the screen lock but also wipe all data on the phone. redmi note 8 aio tool unlock bootloaderremove top