: Use a reliable USB 2.0 drive (8GB or 16GB is best). Avoid USB 3.0 as some boards fail to recognize them during boot. File System : Format the USB drive to FAT32 .
If the TV does not restart on its own after the light stops flashing, wait 5 minutes, unplug the power, remove the USB, and plug it back in. : The first boot after a flash can take 3–5 minutes. Download File KK.M368.A8-FHD-512M-4G-USB-BOOT.p...
Copy the downloaded firmware file directly to the of your formatted USB drive (do not put it in a folder). Safely eject the drive from your computer. Connection : Unplug the TV from the power outlet. : Use a reliable USB 2
Keep holding the button until you see a "Software Upgrading" progress bar or the standby light starts flashing rapidly. : If the TV does not restart on its
While holding the button, plug the TV back into the power outlet.
This firmware is for "FHD" (Full HD/1080p). If your screen is only HD (720p), the image may be distorted or black. Ensure your panel resolution matches the FHD designation in the filename.