Interesting. Mine screen did the same thing back in December, but it didn't affect anything else on the car. I just got the letter in the mail about the update. I guess I'll do it to ensure I don't have another Sync reboot. What sucked was it was giving me directions in the middle of rebooting. Needless to say I got lost in an unfamiliar downtown city that I had never been in before until the system came back online. I'm glad to see someone else have it happen.
Stock with factory Sony 10-speaker HD stereo and 4-wheel disc brakes.