: Turn off the TV and unplug the AC power cord from the outlet.
: Do not unplug the power or remove the USB during this stage.
: If the download is a .RAR or .ZIP file, use a utility like WinRAR to extract the actual firmware file (e.g., VST59.91A_Software.bin ).
: Ensure the USB is formatted to FAT and that only the firmware file is on the drive. Drivers | Manuals | Software Downloads | Sharp for business
: Plug the USB stick into the USB service port on the side or back of the TV.