Man, shit happens to you, doesn't it. I would take it to the dealer, and have them figure out what's screwed up. I had Maplecrest (my dealer) do my update, and thank god, all seems to be okay. Has now been about 3 weeks, and did trips to Southampton, NY & Rehoboth Beach, De, and the nav performed flawlessly, and everything else is working normally, too. Wish you the best.
Joe