well first off let me thank you all for the great site got my tomtom go510 to update map and boot loader.I now have boot 5.5229 nav.7.903 original(patched)map usa and canada 845.2666.The only thing i cannot do is update the navcore. I've tried all the methods "faq,s basic process to install se nav.", " video tutorial" etc. Am I not downloading NAV se 8.002.9117 with basic pack also i dont know how to make the version.txt file. Any help would be greatly appreciated. Oh and did I mention this site is awesome!