The firmware for the board, often used in Mediastar UHD Smart TVs, is typically distributed as a multi-part RAR archive. You can find these files through community-led resources such as the Electro-Support Facebook page or specialized tech sites like Electro-Support.info . Important Installation Steps
Because this is a multi-part archive, you must follow these specific steps to avoid a corrupt file: Download SK708D PC821 UHD MEDIASTAR REF90 part03 rar
: Ensure you have all parts (e.g., part01 , part02 , part03 ) in the same folder on your computer. The firmware for the board, often used in
Installing the wrong firmware can permanently damage (brick) your TV. Always verify that the board number on the physical hardware matches TP.SK708D.PC821 exactly before proceeding. Installing the wrong firmware can permanently damage (brick)
: Right-click on Part 1 and select "Extract Here." This will automatically combine all parts into a single firmware file (usually ending in .bin or .img ).
: With the TV off, insert the USB, then power the TV on. Many systems will begin the update automatically when they detect the file.