I just installed an AVIC-6000NEX this morning. I just paired it with my Note 2, and everything worked first time around. I don't even have to start pandora on my phone. Only thing I can think of is redo the setup.
Now when I did it, I had nothing plugged into the USB ports at the time.
EDIT: I can confirm USB screws it up. I was listening to pandora and plugged my ipod in and pandora stopped working.