Hi. I caused myself a problem by mistakenly thinking my map update had stopped loading and quit the download. I tried to replace the map on the unit by copying the folder to my desktop, then deleting the one on the unit, but when I tried to reinstall the map using TomTom home I got the "no space available" message. I worked with TomTom support and discovered that the problem was that after deleting the file from the unit, YOUR TRASH NEEDS TO BE EMPTIED! That will free up the space you need to reinstall or download an updated map.