I don't really know. I'd have to look on my unit and see. As far as I know, there was only one update ... and the only thing on it that got my attention was the ability to split the screen top/bottom, rather than the side/side split screen.
I was under the impression that "sensitivity" was auto-adjusted by the unit's program or was static ... and couldn't be adjusted by the operator. I'll have to check & get back with you. But, if you're talking about "Surface Clarity" or "Noise Rejection" settings as sensitivity ... they've always been there. There is no mention of "Sensitivity" settings in the 2011 Operation Manual that I printed out from the Lowrance website.
... cp![]()


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