Hey! recently a friend gave to me a generic a/v cable and i install ressuported and replace de iapd file, doesnt work the cable but my problem its i cant use my itrip and my bose dock system!

i uninstall ressuported and replace again he iapd file to original but the problem r the same!! what can i do to solve this? i have a iphone 3gs version 4.0.1 any ideas!?