Click on the map to be redirected to the complete globe's map then click on the square of your interest.
Download the .zip file then unzip it on your desktop. The obtained folder' name must to have this format: x_x_x. X on the name represents the identification number of the tails that you have downloaded. Check that inside the folder there are six other subfolders ( numbered from 5 to 10 ) then copy the whole x_x_x folder on the subfolder "cartography" on your SD card ( for Evo, Easy and Xc models ) or in your USB partition folder, "cartography" subfolder ( for PRO model ). Tick the checkbox named " show roads and POI" on the MAP menù on the device and do it for each display where you would to see the cartography.