Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- [verified] -

to clear the lock flag. Example for some MCUs: unlock_flash or flash unlock

fastboot oem unlock-go fastboot flashing unlock_critical to clear the lock flag

fastboot flashing unlock_critical .

into a special boot mode (e.g., DFU, recovery, or bootloader) and retry. or bootloader) and retry.