Hi mate, I have been given my fathers old tom tom one 3rd edition 512MB and it is ancient with a map over 10yrs old, so looking at getting it more up to date, I am guessing I need this newer navcore and a newer uk map installed, if I download this navcore, how do I get it installed onto the sat nav? Do I just delete all the current contents, then copy all the files from this navcore onto the units internal memory using my pc? then run the fast activate program and then boot the unit up? Sorry for so many questions, but I am totally new to all this, and it looks like you have had success doing this, any help or advice would be much appreciated, thanks.