fastboot devices

: You need a PC (Windows is recommended), the original USB cable, and a stable internet connection.

Click again to finalize the process. Your device will reboot, and the bootloader will be unlocked.

allows for deep system customization, such as installing custom ROMs or rooting. This official process involves a mandatory waiting period and will factory reset your device, erasing all data. Essential Requirements Device Backup

: An active account bound to a phone number. For HyperOS devices, the account must be at least 30 days old .

HyperOS uses the same bootloader unlock mechanism. However, on HyperOS, you may need to use the "HyperOS Unlock Tool" instead of the old Mi Unlock Tool. Check XDA Forums for updates.

Extract the ZIP and run miflash_unlock.exe as an administrator. Log in using the currently signed into your POCO X3 Pro 3. The Unlock Process