Guys, a quick question from a forum newbie. I'm trying to update the Garmin maps in my Kenwood DNX5240BT, I've already updated the software/firmware on both the unit and sat nav. My question is - to update the maps (I only really need UK maps) do I have to download and install multiple files or is there one/a few that will do the job? Ideally unlocked of course :-) Sorry if this a bit of a thick question, I tried downloading the twelve files like this one (CNE_NT_13.41_MS_PORTABLE.part01.rar) burnt them to disc but got no response when I put the DVD in the player so assume I might need to download something else! Thanks, Gary