You can remove an installed EnRoute map in two ways. 1. Remove on the Series 5. We assume you have a working knowledge of folder navigation on your Series 5. Go to the root of the drive on which you've installed EnRoute (probably the internal C: drive). You'll see a "Documents" and a "System" folder and maybe a "Data" folder. (If you don't see a "System" folder check your Menu/Tools/Preferences/"Show 'System' folder" setting). You'll find the installed map in the "\System\Apps\EnRoute" folder. E.g. if you've installed the map "Uk.l5" (UK level 5) there's a "\System\Apps\EnRoute\Uk.l5" folder. Delete this folder with all it's contents. If a map has overlays, there is a folder on your Series 5 in the "\Data" folder with the same name as the map, but without an extension. E.g. the overlays for the "Uk.l5" map are located in the "\Data\Uk" folder. Delete this folder with all it's contents. N.B. not all maps have overlays. 2. Remove with PsiWin. We assume you've a working knowledge of PsiWin and Windows Explorer, and you've a working connection with PsiWin and your Series 5. On the Series 5 you can find installed maps in the "\System\Apps\EnRoute" folder on the drive on which you've installed EnRoute (probably the internal C: drive). E.g. if you've installed the map "Uk.l5" (UK level 5) there's a "\System\Apps\EnRoute\Uk.l5" folder. Delete this folder with all it's contents. If a map has overlays, there is a folder on your Series 5 in the "\Data" folder with the same name as the map, but without an extension. E.g. the overlays for the "Uk.l5" map are located in the "\Data\Uk" folder. Delete this folder with all it's contents. N.B. not all maps have overlays.