I usually like to bury it under tackle boxes or set it on the boat cleat to tangle. That way you get to cuss a lot before you lose or net a fish. Also, forgetting it in the pickup or garage greatly improves your hand landing ability.
I’d call Minn Kota and have your serial # ready. They should be able to tell you.
https://minnkotamotors.johnsonoutdoors.com/search?jo-search=Software+update&op=Enter&_ga=2.266483146.593164665.1554216545-369344891.1554216545&jo-page=2
I started on a brand new “Chipmunk” back in the day. Still remember opening the box with the little chipmunk holding a rifle. She is still punching out rounds today.
2014-2015. I’d guess it has less than 20 hours of use as it was on my big water boat that hadn’t got used much since last year and I put on the Ulterra last spring.