I just updated my 997S CI to the newest version following all of the directions. Now when the boat is on the trailer in my garage, and I cycle through the sonar views, there is no depth reading. I've got my screen readout selections set properly but no depth reading. I've cycled the unit on and off several times and on one particular cycle, I got a depth reading that flashed. When I shut the unit off and on again, the depth reading went away. I've run through the simulation mode and depth is displayed there.
My 797cSI on the bow reads a depth when out of the water. I understand that the reading would be inaccurate, but I don't even get a readout. ie: "0.1".
I live in Minnesota so getting on the water to test is not an option right now. Suggestions?