If you need to access the internal settings after installation, the common service menu code for these boards is Menu + 1147 . Installation Guide Format your Drive: Use a USB flash drive (FAT32 format).
Plug the power back in. Most boards will automatically detect the file and begin flashing (indicated by a blinking standby light). Download RD8501 568 1920x1080 USB rar
Use a tool like WinRAR or 7-Zip to extract the .bin file from the downloaded .rar archive. If you need to access the internal settings