If it says "Command not allowed" or "Remote: Fail", proceed to Method B. Method B: Third-Party Exploits (EDL Mode)
: Disabling bootloader locking makes your device more vulnerable to unauthorized software. Android Open Source Project Step 1: Enable Developer Options and OEM Unlocking unlock bootloader vivo y71 high quality
Stick to XDA or GitHub for verified files. If it says "Command not allowed" or "Remote:
: Ensure the phone has at least 60% charge to prevent shutdown during the process. unlock bootloader vivo y71 high quality
: In Settings > Developer Options , toggle on OEM Unlocking and USB Debugging .
Check the toggle; it should be grayed out and state that the bootloader is already unlocked.