I own a 2012 Dodge Charger with the 8.4 UConnect system. Everything was fine with iOS8, until I updated to iOS 8.0.2. Now Im experiencing the same problem that all you guys are. My music plays, but I can only go forward and back, all of the other buttons, including "shuffle" and "browse" are greyed out and it never updates the music catalog. I also tried to do the update, followed all the instructions to the letter, but when I went to go plug in the USB stick to the Car, it just said that the USB Device was Unreadable, Please unplug it from the system. I hope that Apple puts out an update in the new future. I guess its bluetooth for me now.