I'm not sure if this tweak already exists (if it does, please let me know!) or if it's even possible due to a hardware issue.

I have a JVC KD-PDR61 Car stereo that can connect to an iPod.

I can connect my iPod to it via the standard USB connector to play music and it works well! However, when I connect my iPhone it only charges it. (Before anyone points out I can use the AUX , I know - trying to cut down cables and use my stereos controls )

Is it possible to have a tweak that will enable the Stereo into think just an iPod is connected rather than an iPhone?