Hi, I have been trying to do this for many hours but dont seem to be able to get it. I have just downloaded Korea V8 ENU.rar and extracted. It automatically gets extracted into an img file Korea V8 ENU.img. I then copied it straight into an SD card and stick the card into the GPS. I read a lot about using base map, changing the file from Korea V8 ENU.img to Korea V8 ENU.unl. Nothing seems to work. Does anyone have any step by step instruction on how to do this?