This method is for advanced technicians only. Incorrect wiring or wrong voltage can permanently destroy the mainboard.
The is a widely used universal smart TV mainboard. Making its firmware "work" typically refers to the process of flashing the software via USB to recover a bricked TV or match the board to a specific display panel. The Story of a Successful Firmware Update
If SPC822 introduces regressions:
What is written on your TV's outer sticker?