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

Once the device is in Fastboot mode and connected to your PC, use the following commands. .

Connect your phone to your PC and run: adb reboot bootloader Once the device is in Fastboot mode and

Modern Android security prevents unauthorized software changes unless the "lock flag" is explicitly flipped by the user. Here is how to fix this and successfully unlock your device. 1. Enable OEM Unlocking Once the device is in Fastboot mode and

If you receive an "unknown command" error, try the legacy command: fastboot oem unlock 4. Confirm on the Device Once the device is in Fastboot mode and

You cannot unlock the bootloader through a computer alone; you must first give the phone permission from within the Android OS. Open > About Phone .