Had a similar problem. Having some knowledge of using the osm and mapping I knew it was not an error in this.
I formatted the SD card as fat32 and it was not recognized correctly by the 800
Reformatted as fat and the card worked, other cards formatted as fat32 have worked for me.
Had a similar problem. Having some knowledge of using the osm and mapping I knew it was not an error in this.
I formatted the SD card as fat32 and it was not recognized correctly by the 800
Reformatted as fat and the card worked, other cards formatted as fat32 have worked for me.