Seems like you have a bad waypoint somewhere. I've had this happen to me and I went back and removed a couple and kept trying until i found it. First make sure the date code is something usable and not from the 1960s like my 1 bad one was. Check humminbird pc in the far right side.


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same thingbanghead so I ask I know it's supose to hold up to 3000 waypoints 998 with down and side imaging; any thoughts sugestions? At a loss here how do I find out how much memory is on the thing and whats taking it up shouldn't be anything I wiped everything off and put it on SD card.
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