Copy the firmware file (often named upgrade_loader.pkg or a .bin file) directly to the of the USB—do not place it in any folders. Install the Update : Power off your TV/monitor completely. Plug the USB drive into the board's USB port.
Connect the power. Some boards start automatically; for others, you may need to hold the button on the physical keyboard (not the remote) for 5–7 seconds until the standby LED starts blinking. Download RR8501 CA81A 1366x768 USB rar
: Do not power off or remove the USB while the LED is blinking, as this can brick the board. Copy the firmware file (often named upgrade_loader