If your TV is stuck on the boot logo, you can follow this general procedure to flash the firmware: : Ensure it is formatted to FAT32.
: Place the extracted .img file into the root directory of the USB drive. Download SK708D PC821 3840X2160 MEDIASTR REF90 part01 rar
: Using the wrong firmware can permanently "brick" (disable) your television. Always verify that your board number matches TP.SK708D.PC821 before proceeding. TP.SK708D.PC821 Firmware Software Free Download If your TV is stuck on the boot
Technical files and support for this specific motherboard can be found on several specialized technician platforms: Download SK708D PC821 3840X2160 MEDIASTR REF90 part01 rar