: You are likely trying to run a fastboot command while the device is in a state that does not allow modifications . Common Causes & Solutions
Even if you have the right key (the firmware/ROM), you can’t get inside because the deadbolt is engaged. Manufacturers lock this flag to ensure that if your phone is stolen, a thief can't simply "wipe and flash" a new operating system to bypass your lock screen or Google account security. Step 1: Enable OEM Unlocking flashing lock flag is locked. please unlock it first!
If I could summarize this error message in a single word, it would be: : You are likely trying to run a
If you have done the above and the tool still says the flag is locked: Step 1: Enable OEM Unlocking If I could
(Optional but recommended) Enable while you are there. Step 2: Use the Official Unlock Tool