Just picked up an Xmaxx 8s from a buddy which has the Traxxas Bluetooth module, gps speed reader, voltage sensor, and motor and esc temp sensor. I downloaded the app to my iphone and powered on everything. As soon as the app see the truck come on, it says the truck needs an update. It tries to update and fails, does this a few times and then keeps asking to retry. Truck drives fine, but this app wont work. Any ideas ?