Drefaldwyn wrote:Many thanks for the quick reply Chas.

I am using the SD unlock & downloaded your Primo version and put it on SD card as described in my post. Clearly I've got it wrong somewhere. Somewhere in the mists of my poor memory I think I may have also tried an SD free unlock at one time or another but may have had trouble getting it to work (my own fault I'm sure!!). This was done in my early SatNav days and I was a bit unsure about what I could safely do to the software on the device without messing it up.

With regard to your signature, I guess that I wrongly assumed that you were running an SD unlock.

Which SD free unlock do you recommend?

Thanks for your patience,

Dave