Hi all,

I have tried two DVD's and it will still not work on my MarkIV.
I have updated the software to 4-1-00.

I have downloaded the 4.3gb 2009.1 pro version, opened it in imgburn and burned it both to a Sony dvd-rw and a dvd-r with no look.

The screen on the sat-nav says incorrect cd/dvd.
Can anyone help me please.