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I had it when I had my nse12, I cut the power, powered up and did the updates from sd card.
I’m not saying do it and as mentioned maybe talk to navico about it first, but it worked for me.
After you you update do a hard/ factory reset prior to using it.
Press and hold zoom in & out buttons, press power on while holding in/out, when you hear a beep release in/out. I assume you have backed up your settings and waypoints.

Best of luck
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