Format a USB flash drive (FAT32) and copy the extracted firmware file to the root directory (do not put it in a folder). Flash Firmware: Unplug the TV. Insert the USB drive into the TV's USB port.
Often hosts BIOS bin files and USB firmware for China-made LED-LCD TV boards . Installation Procedure
Offers a dedicated download section for the TP.MS638.PC822 board.
Hold the on the TV (not the remote) and plug the power cord back in.
Keep holding the button until the update progress bar appears on the screen.
Once the process finishes, the TV will reboot. Do not disconnect power during the update.