Updating my Nav N Go iGo 8??

[evilsatan]

Hi all, it has been ages since I was involved with GPS updating etc. so have forgotten most of it.

I have an all singing all dancing chinese headunit in my car with built in GPS. It uses Nav N Go iGo 8, I am looking to update the maps and add speed camera warnings.

Am I best updating the GPS app or leave that 'as is'? Which maps do I need to get and where do I put them on the SD card? Where do I get the speed camera files from?

Cheers!

P.S. Usually I would research more myself but going away first thing tomorrow!