Thanks for the info. There have been many updates for my unit and I have completed them all and I am up to date. Although the same thing happens. I contacted Lowrance and they said something about trying a different software. They did not state which one. I bought my unit at West Marine on Niagra St. in Buffalo. They suggested the same thing but would not commit it any specific type. I was woundering if you ran across the same issue? I wouldn't mind upgrading if I was sure that it would work. $$$$