: Most of these boards are updated by placing the extracted file onto a FAT32-formatted USB drive, inserting it into the TV, and holding the power button while plugging the TV into a wall outlet.
: Since this is "part2," you must have "part1" in the same folder before extracting. The extraction software (like WinRAR or 7-Zip) needs both to rebuild the single firmware file (usually ending in .bin or .img ). Download SK508 PB801 FHD REF69 UNIONAIRE USB part2 rar
Firmware for these boards is typically hosted on specialized electronics repair forums or technician sites. You can often find the necessary files on: : A well-known repository for TP.SK508.PB801 : Most of these boards are updated by