Ok, I just bought a N1 screen.

 

I still need a gps antena and the 30 pin cable and brain.

 

Once I get a brain will I need the discs to beable to use the unit? I'm not to worried about the nav right now i just want to play music and dvd's.

 

Is the software version stored on the brain or head unit?

 

And is there anywere you can download the software online?