I appreciate your reply, pe1agp. So if I can obtain the Navcore and boot loader software you used, my Rider 2nd edition should work? I read elsewhere on this forum that the chipset is the limiting factor. Do you know if this is true? I found through discussions.TomTom that my Rider 2nd Edition has a Sirf Star 3 chipset. The serial number of my device starts K22227.. if that information is useful.