Hi, any one got a clue ref Ford's DVD in dash Sat Nav system (in a 54 ST220)and the updates. Ford p/n for new 2007 disk is 5S7T 10E898 AE but not sure if there will be a firmware update needed for a system which has a 2004 disk, to take the new 2007? If so how is the firmware update achieved?

Cheers