ok - nothing in manual (i did look first!) - i will ask dealer but not sure they know much about system from previous discussions !
I thought someone may have already come across issue/have a way to solve it
I am 99.9% sure we are in the hands of Ford and Blaupunkt when it comes to updates, as the navigation software is DVD based and therefore 'closed' to any updates or modifications, except those that are burnt into the disk. This means that any functionality change or map updates have to be released as a new DVD and installed 'by the dealer' according to the service manual.