This would all depend on which software came in your unit and what is currently available on the Humminbird web site. Usually these units don't stay on the shelf for long so the same version software may be the latest update available on the Humminbird web site. If it isn't you can always e-mail me directly to get an older version of software or go to this web site:
Humminbird Side Imaging Forums - Index
You will have to join the site to be able to download the software but its free. You might want to grab some free Si and 2D sonar viewing software while you are at it too. These guys are a great resource for using Si sonar.
If I spend as much as you guys do on anything, I'm going to research it as well.


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