The USB flash drive should be 128MB or larger and be formatted to FAT32. When you have everything ready you need to download the firmware file from Pioneer's website (links are below) and decompress them before saving it to the flash drive. I haven't had any issues when using GPS apps with the App Radio 3.
Hi crisolivo, Please be informed that the Built-in Bluetooth technology of PIONEER AVH-P3200BT only supports hands-free calling with a compatible Bluetooth phone.
Unless whoever wrote up that notice meant to include all i Phone 5/5S/5C users.
This update applies to only Pioneer App Radio 3 (SPH-DA210 and SPH-DA110) devices sold in the United States and Canada.
Under the service information screen the bluetooth version is '-----------'. I have unsuccessfully tried to re-install AVICZ110. I did also format the card and put on CNSD-110FM-SD2 and the button was not grayed out. This may be and end with pioneer products, very unhappy consumer.