iPhone 4S not working with Subaru iPod connector.
I have a 2008 Subaru Impreza with an iPod interface kit I purchased and installed within the last year. My old iPhone 4 (with iOS5) charges and plays music properly with the kit, but my new 4S only charges. I'm sure others have this problem but I was wondering if anyone knows if this issue is fixable with a firmware update or if they locked out these kind of iPod connectors and if I should consider just replacing my car's head unit. Thanks!
iPhone 4, iOS 5