Dude all I can say is don't even open the darn thing till you read every post on Bass Boat Central Board about the program. Second buy you the Lakeimiages training DVDs they are the BOMB. I was about sideways, upside down with the darn thing. Till I watched the training DVD. I own a 899 and a Helix G2N, it works beautifully with both. You must also every time adjust the settings on your bird to read the ZLC. If you don't you will never see the maps you created. It is a great mapping tool to use once you get a handle on it. I am not an expert by any means but feel free to PM me for any assistance that I possibly can. I have a terrova on front of my boat.