turn off or unplug the power during this process to avoid bricking the motherboard.
: On many VST-based boards, press and hold the Power button on the TV (not the remote) and then plug in the power cord. Keep holding until the indicator LED starts blinking rapidly, signaling the update has started.
Copy the firmware file (often with a .bin extension) directly to the of the USB drive. Do not put it in any folders, as the TV may not recognize it. Initiate the Update :