Hello Martin
Thank you. I have contacted ViaMichelin on the number you indicated. Unfortunately, it was difficult to understand the person at their end, but the gist of the speed camera update problem is there is a problem at this time and I was advised to try again in a few days.
I refered to the other peculiarities and they tried to take me through a 'hard' reset. Here again I had difficulty understanding, however, I later refered to the instruction booklet and successfully carried this out.

One major reason I bought a satnav was to be made aware of the actual speed limits on those roads where it is not obvious - however this device seems lacking in that respect. My current car has a athermic windscreen which prevents the radar snooper from operating correctly - one only knows if speed traps/cameras are active after onehas passed them!!!!!! I always try to drive within the lawful limits, but it can be difficult these days, especially hereabouts!
Thanks and regards - Dave