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

Follow these steps in order to resolve the error and successfully flash your device. Step 1: Enable OEM Unlocking in Android (If Device Boots)

Open and firmly close every door/cover on the device (front, side, rear, top scanner unit if copier). Listen for clicks.

Lock and unlock the bootloader | Android Open Source Project

Prevention is always better than cure.

The error message means your Android device's bootloader is completely locked , preventing you from flashing custom firmware, recovery files, or rooting the system. This safety feature stops unauthorized code or custom system images from loading onto the hardware. Follow these steps in order to resolve the

Here, the "flashing lock flag" refers to a hardware-based write protection mechanism of the flash chip itself. For example, a Linux kernel developer might see the error when the SPI NOR framework fails to unlock a memory region before an erase or write operation, as seen in discussions about the mtd: spi-nor drivers. The error signals that a block of memory is locked against writing, often due to status register bits that define protected areas within the chip.

Certain official firmware flashing tools (like Mi Flash Tool or Realme Flash Tool) have a default setting enabled called "Clean all and lock." If you previously flashed a rom using this setting, your bootloader was re-locked.

There are anecdotal reports of computers running a Linux operating system in a virtual machine (VM) successfully performing the unlock when a live Linux environment failed [5†L34-L36]. If possible, try the unlock process from a different computer or operating system entirely to rule out environment-specific issues.

You must retrieve a unique unlock string via Fastboot using fastboot oem get_unlock_data . You then paste this string into Motorola's official developer website to receive an unlock key via email. Google Pixel / OnePlus Lock and unlock the bootloader | Android Open

(You need an unlock code previously obtained from Huawei’s website.)

: Once OEM Unlocking is enabled, reboot the device into Fastboot mode and use one of the standard unlock commands: fastboot flashing unlock (Standard for newer devices) fastboot oem unlock (Common for older models)

If your phone still boots into the Android operating system normally, you must toggle the manual permissions that grant command-line access: Disconnect the device from your computer.

If your device is locked to a specific carrier (like Verizon or T-Mobile in the US), unlocking the bootloader might be impossible. Carriers often disable the "OEM Unlocking" option. In such cases, your only recourse is to contact your carrier to request a SIM unlock or, if possible, to ask about their bootloader unlocking policy [12†L12-L15]. Here, the "flashing lock flag" refers to a

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

sudo flashrom -p <your_programmer> --flash-name sudo flashrom -p <your_programmer> --wp-status

Open your terminal or command prompt inside your Google Platform Tools directory. Force the device to reboot into bootloader mode by typing: adb reboot bootloader Use code with caution.

: "OEM Unlocking" may not have been enabled in the device's developer settings before attempting the flash.