CN+ software update problem

Hi all

Has anyone had problems updating?
I tried updating the CN+ software and it hasn't worked Followed the instructions posted on FF. I get to the point when the update is supposed to happen, but the screen only displays the "Notes" display warning me about following road traffic signs etc. It never moves on from this page.

Is there something simple that I have missed? Should I be pressing Nav or Map or something else to make the update happen?

I notice that the files I got from the ftp are compressed, should I have de-compressed them before copying to disk?

In case it makes a difference to any replies I get, I do mange to pick up 8 satelites when I turn the system on. CN+ keeps telling me that I haven't inserted the navigation map.

Any help much appreciated?

The files need to be decompressed and burnt to a CD as an ISO image. The system cannot read the compressed files and therefore will not update Use "ImgBurn" software to burn ISO files to CD, this will make it readable to the system.....

Thanks for the advice, will try that this weekend