One helpful hint that I experienced when upgrading to V32...

I put the imaged CD in my nav computer, and I only got a black screen on the LCD. I did hear normal "read" drive noise so I decided to hang tight for a bit. About two minutes later, the CD ejected. I then put the map disc in and started the car. The LCD then showed an "Update Successful" screen.

So if anyone experiences that, don't freak out, just be a little patient.