Ok, lets try explain further. I plug in the GPS, up pops two removable drives Garmin and Garmin UK. Within the Garmin Uk is gmapsupp.gma gmapsupp.img and gmapsupp.uml.

I have downloaded the gimgunlock file for the MAC and this folder appears gimulock-0 Within the folder is gimgunlock and gimxor

When I drag the img file from the GPS onto the gimgunlock icon nothing happens apart from I copy the file from the GPS location. This takes several minutes to do. I now have 2 copies of the img file in the gimgunlock-0 folder. what would happen if I drag the gimgunlock folder into the Garmin Uk folder where the img file is?

I realise this is probably very simple and I apologise for my stupidity!!!