If you have all the parts of the RAR archive, you must extract them to get a single file (usually named Update.img or V8-S586T02-LF1V371.bin ) before following these general steps: Format a USB drive to FAT32 .
Once the TV restarts, it is recommended to perform a "Reset Shop" or "Factory Reset" via the settings menu to ensure system stability.
Press and on the TV (not the remote) while plugging the power cord back in.
Place the extracted firmware file in the root directory of the USB (not in any folder). Update Method (Direct): Unplug the TV from power. Insert the USB drive into the TV’s USB port.
Installing incorrect firmware can permanently damage ("brick") your TV. Verify that your TV’s current software version begins with V8-S586T02 in the Settings > About menu before proceeding.