Failed -remote 39-flashing Lock Flag Is Locked. Please Unlock It First 39-- May 2026

"FAILED (remote: 'flashing lock flag is locked. Please unlock it first')"

The error occurs when you attempt to flash custom firmware or system images onto an Android device while the bootloader is locked . The bootloader is a security layer that prevents unauthorized tampering with the system. Why This Error Happens

Your phone will restart into a screen that often shows a lying-down Android robot. Step 3: Run the Unlock Command "FAILED (remote: 'flashing lock flag is locked

(Use unlock_critical to unlock bootloader and flash-critical partitions like xbl , abl .) Why This Error Happens Your phone will restart

4. Check for Device Specific Solutions

bootloader is in a "LOCKED" state

The error FAILED (remote: 'Flashing Lock Flag is locked. Please unlock it first!') occurs when you attempt to flash firmware or partitions to an Android device while the . On many modern devices, simply enabling "OEM Unlocking" in settings is not enough; you must also execute a specific hardware-level unlock command while in fastboot mode. Error Analysis Please unlock it first

The error: create paper: failed -remote 39-flashing lock flag is locked. please unlock it first

Open a terminal (Command Prompt/PowerShell) on your PC in your Platform Tools folder adb reboot bootloader