Release the button once the firmware update progress bar appears on the screen.
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 . Download S586T02 LF1V371 part01 rar
Once the TV restarts, it is recommended to perform a "Reset Shop" or "Factory Reset" via the settings menu to ensure system stability. Release the button once the firmware update progress
Press and on the TV (not the remote) while plugging the power cord back in. Press and on the TV (not the remote)
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.