Hello, I Just bought the avic-n4 and it's great. One question how do you update the navigation. I assume by buying a new navigation cd. Looking at the pioneer web site the cd's are $250.00. Thats alittle pricey. Is that the deal? At that price I should make a duplicate of my cd in case i scratch it. Is duplication easy or is it write protected like DVD's.

Yes, they are $250 but often end up on torrents or there will be copies for sale on ebay. Yes, they can be copied...There should be dozens of threads on here about doing it

N4 has the 70-MTP doesnt it?

No. N4 disks say N4 on them