I Know what you're saying buddy. It could be how the usb is being formatted. The file structure of the usb (root) should be;
vuplus > solo2 > (6 files)
When you insert the usb to the front, turn off the solo2 via the rocker switch and then turn back on, on the front display of the solo2 it will say Update! Press Ok, then on the front of the solo2 press ok and all is done on your part until the box reboots its self, pull the usb stick out and follow the instructions on screen and restore from your backup like before. :thumbsup: