Power on the device. Most boards will start the update automatically, indicated by a flashing LED.
Extract the .bin file from the downloaded .rar archive and place it in the root directory of the USB drive. Flash Board: Power off the TV/Controller board. Insert the USB drive into the USB port. Download RDA8501CP531 1440x900 General USB rar
Typically delivered as a .rar file containing a .bin software file. Power on the device