For those with aftermarket WinCE or Android units who need to manually move files, the "verified" structure for your SD card folders is: : Put these in iGO/content/map/ .
Before you download, it is important to understand that iGo Primo maps are not a single file. They are a collection of files usually compressed into a folder named . For a Spain map package, you will typically find: descargar+mapas+igo+primo+espana+gratis+espanol+verified