Good. I'm glad that you understood my post. It kinda looked like this thread was going astray. Let's get back to your problem.
Igo8 gives the user the option in settings to choose the road conditions. I believe [doing this from memory, my battery is kinda dead] one of those options is "unpaved roads." If I remember correctly from your previous posts, you were looking at the GPS for off-road traveling. What happens when you choose that option?
What program does your friend now have on his device that is successful? Did you look here for the unlock http://www.navitotal.com/showthread.php?1279-Navman-Unlock-for-most-devices Pay close attention that you must have "active sync" installed prior. Also make sure that you download the correct active sync for your operating system. Vista's is called "Mobile Media Center" or something like that. If you have Vista, do a Google search for active sync for Vista.
I post/read a lot of threads/posts here. Sorry if I confused you with others.