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

: If that fails, some older or specific devices use: fastboot oem unlock

Type the following command to ensure your PC sees the phone: adb reboot bootloader

sudo flashrom -p <your_programmer> -w new_firmware.bin : If that fails, some older or specific

Note: If you are using an older device, use fastboot oem unlock instead. Step 4: Confirm on the Device Look at your phone screen. A warning message will appear. Use the to select "Unlock the bootloader". Press the Power Button to confirm. The device will wipe itself and reboot. ⚠️ Brand-Specific Considerations

# Download and compile the tool, then run it to unlock the entire chip ./unlock_spi_winbond Use the to select "Unlock the bootloader"

sudo flashrom -p internal --wp-disable sudo flashrom -p internal --wp-range 0 0

If the security flag is set to locked , the phone rejects the data stream and outputs this remote terminal failure. Common reasons this error blocks users include: : If that fails

If your device still boots normally into its stock Android operating system, you must toggle the software allowance switch first. Disconnect your device from the computer.

We see this error appear in two primary, though related, scenarios.

You enabled the permission in Android, but you didn't execute the final physical or fastboot hardware unlock protocol to change the status from LOCKED to UNLOCKED . Step-by-Step Guide to Fix the Lock Flag Error

The error will manifest in your command-line or terminal interface after issuing a fastboot flash command. It will appear in a similar format to: FAILED (remote: 'Flashing Lock Flag is locked. Please unlock it first!') [5†L13-L14][7†L20-L21]. While the text is a clear indicator, you might also see other variations referencing lock states, such as flashing is not allowed in lock state [8†L8-L9].