I bought it in november and a Navionics card That I could not get to work. The book that came with it was not much help.. then CDC members told me there was on the Humminbird web site the Operations Manual PDF files. I read them dozens of times then Finally printed them out.. I was hunting for how to turn on the Micro - Card Reader .. In the Satellite screen it said the card was not there -- Took it in and out a Dozen times still nothing === Called Costumer Service finally and they also said when the Card was inserted it was Automatic to come on {NADA} then I had to go get the Software version.. It was 1.64 .. they said that it had to be updated . and gave to my wife the PDF files for another Micro Card for the new software that she put on the Micro card and download onto another Micro Card all the tracks and waypoints then Restore Defaults.. Great,, at restoring the defaults My bird did not do what the service manual said ==== then it locked up on overloaded data === and would not respond to any keys After an hour I turned it off -- the screen counted down to, two, for shutdown then Locked up again for 20 Minutes before it powered off. Tried another two times to restore Defaults before it Blinked at me. I then Inserted the Formated Micro card and it indicated there was a Card in the slot, So I said to myself the Navionics card must be bad then it did not Download the new software --- Then the wife gave me the directions for downloading -- they said, on startup no buttons should be pressed ---- but where they directed to another Tab where the software was suppose to be entered it had to go to the main Menu first -- that is not what the Directions said ==== [ Cant Get to there from Here] The directions said the software version currently installed would show { Nada] Then it would ask something about if I wanted something and I should say No in big black letters [ Didn't Happen} === Instead the Helix LOcked up again on Information overload === The Directions were specific it was to not be turned off for any Reason, Or it might have to be returned for Repair and new software installed ... After 5 hours and nothing and would not turn off , If it had to go back it had to be unpluged.. After about 10 minutes I plugged the power back in and it powered up and still had the old software but at least the memory was not Fried --- you should have seen me putting the transducer in a bucket so it did not Overheat and give me another problem .. If this thing ever gets new software Humminbird is going to do it .. My Brother would have taken a Hammer to it a month ago