I wonder if you are installing with correct procedure? download image-> unRAR it to a usb stick,in usb stick you will see a folder named vuplus-> inside the vuplus folder you will see another folder named vuo duo.
Another point is when the iamge has been read + programmed the box ,you should unplug the usb stick then switch off at mains then switch back on ,give it a few seconds and it will say starting as it loads the image.
RAR file extract to normal file. USB format FAT32 upload screen shows loading DARK ELITE its an hour now...