I am running a B75M transducer, hooked to a sonar hub that is then hooked to a Simrad NSS 7 EVO3. Recently it started losing bottom. Even in shallow water and at low speeds. Once it loses it I have to restart unit and sometimes it works fine. This week it lost bottom, restarted it and now temp is stuck at 32degrees. I am doing an update this week on the display. My question is what software should I put on sonarhub? Latest update I find on simrad site is for the s5100 and makes no reference to sonar hub so that unsure if it will work? Thanks!