Yea, that was 2.6mb and not gb,quite a difference lol. Sorry for the confusion, and yes you are correct Greg about the updates. That's where they came from (my humminbird account) and the version is correct also.
I made three recordings and have been playing them back with Humviewer. Sometimes i can get the track to show up in Google Earth and sometimes not. I will keep on trying until i find the correct way to view them.
Thanks again for all the advise and help.