Originally Posted by cruisin5268d
Also...I'm not sure why you took it to them to update the software as it is very easy to do on your own. One of the instructions is to have your engine running during the upgrade.
that depends. SYNC has two firmware "blobs;" there's the VMCU and the CCPU. the CCPU is the software you interact with; it handles phones, audio devices, voice recognition, and that Applink stuff. When you do a SYNC software update over USB, you're updating the CCPU firmware.
The VMCU is the part which interfaces with the rest of the car, and that can't be updated by the user. it's possible there was an update which required a dealer visit.