Hyundai Corporation, traditionally known for automotive manufacturing, licenses its brand to various consumer electronics manufacturers. Consequently, "Hyundai TVs" do not represent a single unified hardware architecture but rather a collection of devices produced by different ODMs (Original Design Manufacturers) over different periods.
Insert the USB into the TV's USB port while the TV is unplugged or off. : For some models (like HYLED-32HDSG Hyundai Tv Firmware Download