Once you have your "extra quality" firmware file, follow this precise guide to flash it. The process is universal for almost all TP.SK506S.PB802 based TVs.
Different firmware versions map infrared codes differently. Ensure the firmware file matches your original remote layout. Step-by-Step Installation Guide tpsk506spb802 firmware download extra quality
Initiate the Flash: Press and hold the physical power button on the TV (not the remote) and plug the power cord back in. Once you have your "extra quality" firmware file,
Insert the USB: Plug the drive into the USB port of the TPSK506SPB802 board. tpsk506spb802 firmware download extra quality