Firmware for this board is typically distributed as split compressed archives (e.g., .part1.rar, .part2.rar) due to large file sizes. You can find recovery and update files on specialized technician forums:

The TP.MS638.PC822 is a versatile replacement motherboard designed to restore or upgrade 4K televisions.

The refers to a specific firmware and hardware configuration for the TP.MS638.PC822 motherboard, a popular "three-in-one" 4K Smart TV board used in various television brands like Asano , Polar , VU , and Innova . Firmware Download Information

: Offers USB firmware software for specific TV models using this board, such as the Polar P55L21T2CSM .

: "REF66" usually denotes a specific software revision or panel configuration (refresh rate/resolution) required for the board to communicate correctly with the 4K display. Detailed Board Review

: Provides a repository for TP.MS638.PC822 technical files and repair tools.