Hi all, I have an aftermarket nav system in my car, which has a 30-pin iPod connector in the glove box. I had the iPhone 5 ever since I had this car, thus I have an official 30-pin to lightning adapter. This works perfect as I can control via my nav system, or on the iPhone 5 itself. I can select songs, forward backward just like listening on headphones. However, I have recently retired an iPhone 4, so I loaded it up with my entire library with the thought that I would just keep it in the glove and be able to listen without having to connect my iPhone 5. However, the problem is when I connect the 4 to the nav system, the phone goes dead into "Accessory is Connected" mode, meaning I can't control anything on the phone. It works with music, but I would really like to be able to select my playlists and genius playlists. My question is, the 4 is on iOS 5, since it is very speedy on this iOS. My iPhone 5 and my wife's iPhone 6 don't have the accessory is connected message, does this go away if I update the iPhone 4 to iOS 7? I don't want to slow down the 4 to a crawl if this doesn't get rid of the message.