The specific file you are looking for is part of a firmware package used to resolve issues like "logo hang" (boot looping) or to properly align the board with a new 4K panel.
The file refers to a specific firmware part for the TP.SK708D.PC821 Go to product viewer dialog for this item. Download SK708D PC821 3840X2160 REF80 part03 rar
: Designed specifically for 4K Ultra HD (3840x2160) panels. Operating System : Typically runs Android 9.0 . The specific file you are looking for is
If you are repairing or upgrading a television with this board, technical documentation and official firmware can be sourced from specialized providers: Operating System : Typically runs Android 9
4K Smart LED TV motherboard . This file is one segment of a multi-part RAR archive required to flash or update the board's software to support 4K (3840x2160) resolution. Hardware Overview: TP.SK708D.PC821