Often hosts BIOS bin files and USB firmware for China-made LED-LCD TV boards . Installation Procedure

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.

TP.MS638.PC822 (also commonly listed as MS638 PC822).

This firmware is typically used to fix "stuck on logo" (boot loop) issues or to reprogram the TV after replacing the motherboard. Where to Find the Download

Primarily found in Mitashi 65-inch 4K models (likely the "Ref65" mentioned in your query) and other brands like Polar or Asano. Resolution: 3840x2160 (Ultra HD/4K).