I just installed a Z2 I bought off eBay. I got everything hooked up with the XM tuner. The maps are working fine and the XM plays on channel 1. I have not activated the XM but it does play.
I have driven the car for many, many miles and it still says updating in the upper right hand corner of the map screen. I am not sure what it is updating everything seems to be working. Any ideas on what I am doing wrong?