I've been using a Garmin Oregon 400t, with OS maps, for about 4 years.
Thinking about upgrading to a 600, and have been wondering whether I need to buy a new set of maps or if the existing set will transfer.
At the moment, they are stored on the 400 machine, in a zipped file of about 2gb. Am I correct in thinking that all I will need to do is use the back up copy I have on my PC and drop it either onto a SD card or into the new machine?
Will save about 100gbp if this is feasible.
In practice, I only really use the OS maps when we walk, preferring OSM for cycling.
Thanks for any advice you can give.
Keith