http://www.pioneerelectronics.com/StaticFiles/PUSA/Car%20Electronics/Firmware%20Update%20Files/USB%20Charging%20for%20AVIC-Z130BT%20&%20AVIC-X930BT_v3.002/Z130BT_X930BT_FirmwareUpdateNotice_v3.002.pdf
Just came out a few days ago, December 5th.
This is supposed to improve USB connection for iOS devices. Is this worth considering, or should I upgrade to the Version 5, X940BT firmware?