I upgraded from C120 to Gs165 used existing B260 thru hull transducer, DSM 300. very happy with unit!! When I bought the unit it had v17.45 everything worked great But I did an update to v17.46 about 2 months ago and ever since the water temp reads 127 degs. good voltage on boat, checked all connections did a resistance check on transducer its good. The problem doesn't happen ever time. Only when I fish. I check the unit the day after fishing it works great on the trailer. Could the issues I'm having be a software problem? Please help me get my sanity back.
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