My jailbroken iPhone 4 will charge on my clock/radio but is not recognized at all when I try to play music. I tried it on another device and got the same thing. I can get audio out using Apple's A/V cord when I connect from the bottom connector just going to a stereo. An old iPod works on the clock/radio so I know it's a phone issue. Any idea what the issue is? Using jailbroken untethered 5.0.1 but issue has been going on with past versions.