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. Download S586T02 LF1V371 part01 rar
This specific split archive (part01.rar) is commonly found on technical support forums and firmware repositories like GPAK or 4PDA . Installation Overview Place the extracted firmware file in the root