Thread: How to install multiple maps on Garmin the easy way

I have Italy+Greece Garmin original and Tunisia from [Only registered and activated users can see links. ] it is not Garmin
In Zumo display I was continuosly seeing the right road and another very stright road irregularly centered. That was the base map of Garmin. I had to deselect my Garmin map so I had only the real road on the screen.
I think the reason is that worldmap is very unaccurate for african countries. The opposite happens in Europe and USA, so roads are always exactly superimposed or a particular Garmin map excludes the world map