NAV update. Took 4 hours and we've got our NAV !!! One minor issue, after getting home and trying to sync my phone, the "system" locked up. After turning the car off and back on, had a blank screen for about 3 minutes and I was freaking out, finally there was a message on the screen that said System update in progress, Sync/Microsoft. After about 2-3 minutes, we were back in action. Whew!