AVIC-X9310BT and AVIC-X930BT are the same unit, only difference is the model number. I have the x9310bt and had no problems with any of the updates. If you do the software upgrades it basically turns it into an AVIC-x940BT. This is definitly the place to learn about it too. There is a lot on information in these forums. Read as much as you can before jumping in. The upgrades aren't hard. They will take about 30 minutes or so of you sitting in your car with it on waiting for the update to complete.