Updated my iPod Video classic to iOS 2.0.5. The iPod is used solely in my truck and connected to my Alpine INE-W940. The problem is when I try to listen to one of my playlists the head unit only recognizes one song and the desk shows only one file (1/1) in the playlist. However, when I use my other iPod that has not been upgraded, the playlists are fine and the deck reads the correct number of files in the playlist. How can I restore my iPod to a previous iOS that works?