Originally Posted by ihavebettersound
I was in the same exact situation just yesterday. I couldn't get the base map to switch, yet I was able to switch real time maps. I finally started messing with the pins on the end of the AP cable that go into the diagnostic port along with the diagnostic port. Just kinda pushed down on the wires on top of the diagnostic port, thinking there was a loose connection. After doing those two things, everything worked fine!
I was thinking along the same lines as you. I fiddled a little with the connections, but still no luck.
Hopefully my friend will be back tonight and let me use his cable. Otherwise, I will just wait for the new cable to arrive. Its kind of fun to get a chance to drive with just the new turbo-back, to feel the difference before the reflash.