I have had a GO600 for a number of years with no problems until the new Full Europe update. I finally manged to get a 32 gig sd card recognised but I have hit the internal memory situation. I see there is a solution by installing a small "keeper " map. If I could install that I am sure that would do the trick. Many thanks. By the way I really do like this device, the only improvement I could think of would be a USB C port if that were feasible..