I just bought the Pioneer AVIC-X920BT unit and it came with a PAC cable to connect it which gave me video and touch control of Pandora and my ipod on my iphone 4 but no sound. So I called Pioneer and they told me I needed the CD-IU50V cable I ordered the cable and it does the same thing no sound. I called Pioneer and they now say that the unit doesn't support the iphone 4 that I need to buy an iphone 3GS with Firmware version 3.1.2 I told them that even if I did buy the iphone 3GS the old Firmware is no longer available and they told me I should have bought it last year and not updated it. Pioneer tech support is amazing.

What is the difference between the 3GS and iphone 4 that the video works but the Audio doesn't come out?

Can I get a custom cord for iphone 4 somewhere?

Is there a way to modify the software to get it working with iphone 4?

they told me I should have bought it last year and not updated it. Pioneer tech support is amazing.

I am not surprised that someone at Pioneer said something so stupid. They have actually said worse then that before. Anyway there are plenty of people using i4's with these units so your issue should be simple. Check all of your connections. Also please file a complaint with the BBB on their response to you.

Pioneer Tech support insisted the iphone 4 doesn't work with this unit. I thought it might be just my Iphone 4 but my wifes Iphone 4 does the same thing. I can see the time moving forward on the songs and just get no Audio.

Has anyone else with an Iphone 4 had any trouble with this deck?

There are vids on Youtube with this setup. It works just fine. Check your connections and make sure the BT audio isn't activating and forcing the phone into BT audio mode.

There are vids on Youtube with this setup. It works just fine. Check your connections and make sure the BT audio isn't activating and forcing the phone into BT audio mode.

This is really strange I turned off Bluetooth on both the phone and the reciever still no sound. I turned it all back on made a call using blue tooth and I get audio from the ipod in the background while I am on the phone as soon as I hang up the call no Audio again. This is driving me nucking futs.

Are you sure this just isnt a case of AUX1 needing to be switched to 'iPod' in AV settings?