Chew_Clarence

Just bought a new Pioneer unit Model No. AVH-X8850BT. Upgraded my iPhone 5 to iOS7. Couldn't get my AppRadio mode to work. So I called Pioneer and they suggest me to bring in the unit to update the firmware. It took 2 days! The firmware is 8.19 now. I am able to use AppRadio mode on my iPhone 5 iOS7 now. But I can't increase the volume on any apps launch within AppRadio mode. There is volume but I cannot increase or decrease it. I assume this is iOS7 issue. I have submitted help on Pioneer website.