The error message is a security safety mechanism on Android devices, particularly those with Unisoc or Spreadtrum chipsets, that prevents any modifications to the system partitions while the bootloader is in a "locked" state. What This Error Means
Ensure you have the latest ADB and Fastboot drivers installed on your PC. Step 2: The Official Unlock Method flashing lock flag is locked please unlock it first full
You must download the Mi Unlock Tool on a PC. The error message is a security safety mechanism