: Allows users to unlock the bootloader through EDL or Fastboot modes. Unlocking is often a prerequisite for installing custom ROMs or rooting the device.
If you ever want to relock, you must flash the using "clean all and lock" via MiFlash. However, this will re-trigger the "hot" lock and you will have to wait 168 hours again. Only do this if selling the phone. redmi note 8 aio tool unlock bootloaderremove hot
Opening the back cover and shorting two specific gold pins on the motherboard while plugging in the USB cable. : Allows users to unlock the bootloader through