Power on the board. The indicator light on the 7-key button will turn red and then begin .
To install the (specifically the T.RD8503.03 ) universal controller board firmware for a 1280x768 resolution, you must download the appropriate .bin file, typically distributed in a .rar package from technical repositories. Firmware Installation Steps Prepare the USB Drive : Format a USB flash drive to FAT32 . Download RD8503 1280x768 rar
: If the picture appears distorted or inverted after installation, access the service menu by pressing "MENU 1147" on the remote. Power on the board