Hi, I think I've done it... I tried the upgrade, but I must have ejected the disc too soon.

I put the disc in the drive on the initial boot, and all seemed to go well. The screen notified me about loading software, but then the system went to a blank screen for a several minutes. I then shut off the car and ejected the disc, causing the screen to go into a blank state on boot. The radio works, but all information is absent.

My question is: Can I fix this myself or will I need to visit the dealer? I've upgraded the nav several times, but this is the first problem I've encountered. I appreciate any advice in resolving this issue of mine.