I recently updated the f700bt firmware to the 3.1 with no apparent problems until I tried to look at my maps and they were all gone except for the basemap. I went back into testmode to look if my maps were on the unit. I open the "my flash disk" and there are no igo/apl2/content/.... All I see are a few gps... Files. Why can I not see my file folders to load my maps a poi too?