guys, I don't know what's going on here but here's my experience:
I installed the appradio yesterday and out of interest I put the handbrake wire to an earth point just to see the routine.
To my surprise, it worked, and continued to work even while driving!
So, i thought I'd update to 2.45, just incase i no longer worked, but it still did.
For your info, I'm thinking this must be a difference in the EU and USA firmware (I'm running the EU/UK version) although I don't know what other differences there would be, I'm guessing the radio for a start, we run different frequencies to