Connect Device to EDL Mode: Boot your device into EDL mode and connect it to your computer.
Remove KG: Use an appropriate tool to click “Remove KG” and wait for the process to finish.
Reboot Device: After completion, reboot your device.
Unlock Bootloader: Simultaneously press Volume Up and Down to unlock the bootloader.
Enter Download Mode: Boot the device into Download Mode.
Flash Patch ROM: Finally, flash the patch ROM to complete the process.