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

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

| Scenario | Description | |----------|-------------| | | Trying to flash TWRP or a custom recovery via fastboot flash recovery twrp.img | | Unbricking | Attempting to write a stock firmware image to a soft-bricked device | | Rooting | Flashing a patched boot.img (e.g., Magisk) | | Development | Using fastboot flash on a test device that hasn’t been unlocked | | Cross-flashing | Trying to flash firmware from a different region or model |

: If the command fails, ensure you have enabled OEM Unlocking and USB Debugging in the "Developer Options" menu within the phone's settings.

The error message "FAILED (remote: 39: flashing lock flag is locked. Please unlock it first)"

This error message commonly occurs when trying to flash firmware or system images onto an Android device through It indicates that your bootloader

Your phone screen will reload and clearly print at the top of the interface. | Scenario | Description | |----------|-------------| | |

Confirm your screen switches to Fastboot Mode. Test the connection by typing: fastboot devices Use code with caution.

Connect your phone to your computer using a reliable USB data cable.

The "Failed -Remote 39:Flashing Lock Flag is Locked. Please Unlock it First" error is a frustrating issue that can occur when trying to flash or update firmware on certain devices, particularly those with a Qualcomm or similar chipsets. This error message indicates that the flashing process is blocked due to a locked flag, preventing any further actions. In this article, we will delve into the causes of this error, its implications, and most importantly, provide a step-by-step guide on how to resolve it.

: Connect your device to the computer and run: adb reboot bootloader Confirm your screen switches to Fastboot Mode

For older low-tier architectures or specific Chinese-market chipsets, attempt: fastboot oem unlock-go Use code with caution.

Fastboot rejects any modification commands ( flash , erase , boot ) to prevent bricking.

If your device is soft-bricked, stuck in a boot loop, and you cannot boot into Android to toggle the "OEM Unlocking" switch, use these emergency recovery methods: Fix Device State Locked Unlockable in Fastboot Mode

This error frequently occurs when developers or enthusiasts attempt to flash custom operating systems, such as installing Ubuntu Touch on tablets like the JingPad A1 Go to product viewer dialog for this item. The "Failed -Remote 39:Flashing Lock Flag is Locked

(Use unlock_critical to unlock bootloader and flash-critical partitions like xbl , abl .)

After sending the command, your phone screen will likely change to a confirmation page. Use the to highlight "Unlock the Bootloader" and the Power Button to confirm. The device will then wipe itself and reboot. Troubleshooting Common Issues

User tries to flash TWRP via fastboot but gets failed -remote 39-flashing lock flag is locked.