Manufacturers lock the bootloader to prevent unauthorized software changes and to protect your data if the device is stolen. The "Flashing Lock Flag" is a security check; as long as it is set to "Locked," the system will reject any attempt to flash (install) new firmware, custom ROMs, or recovery files. Step 1: Check Your Connection
In the MiFlash tool, look at the bottom right corner. Ensure you have "clean all" selected rather than "clean all and lock," which can sometimes cause conflicts during the initial handshake. Important Warning flashing lock flag is locked please unlock it first full
If you are seeing the message on your screen, you are likely trying to modify the software on your smartphone—specifically a Xiaomi, Redmi, or POCO device. This error typically appears in tools like MiFlash or during a Fastboot operation. What Does This Error Mean? In simple terms, your phone’s Bootloader is locked . Ensure you have "clean all" selected rather than
Ensure you have the latest ADB and Fastboot drivers installed on your PC. Step 2: The Official Unlock Method What Does This Error Mean
Newer USB 3.0/3.1 ports (blue or red) sometimes cause timing issues with Fastboot. Try a USB 2.0 port if available.
Xiaomi usually requires a waiting period of 168 hours (7 days) before they allow the unlock.