, you must use the official Mi Unlock Tool provided by Xiaomi. This process is a developer-level task that on your device and may void your warranty. Prerequisites
Once the account is properly "bound" in the settings, the official tool is very reliable. It rarely fails unless there are driver issues or you try to skip the waiting period. How to unlock Bootloader in XIAOMI Redmi 5 with...
buttons simultaneously until the "Fastboot" logo (Mi Bunny) appears. , you must use the official Mi Unlock