I tried to update last night and it would not work, my car kept rejecting the cd. I confused because my cd burner at home allowes me to burn at x2 which is as slow as possible. However, I tried it again this morning with a different CD burner and even though the cd burner would only let me burn it at x48, it worked perfectly. The update is great and was MUCH needed! Thanks everyone!

From my research on this site and from my experience if your nav system is having trouble recognizing the software cd then it is either a problem with your CD-R or your burner.