Phone not charging.
I just got the 3G iPhone last night, replaced my original iPhone... no problems with the phone so far, except the fact that the cable and adapter that i have in my truck to my stock headunit will play my music and display the song info on the radio, but it will not charge the phone. When i plugged in my old iPhone, it would come up on the phone and say that the accessory was not made for the iPhone do i want to turn on Airplane mode, but it would play the music and charge... that was using firmware 1.1.4... now with the new 3G iPhone using 2.1 firmware, it comes up and says the same message but right above it, says this accessory will not charge the iPhone... If it could charge the first, why not the second? is this just a firmware issue? any input would be appreciated. Thanks!
Windows XP Pro