I have a Carbon 12 and AT1. A couple months ago I started getting a blank screen on AT on the initial startup for the day. I could restart the AT box a couple of times and it would eventually start working. Once working, it was good to go for the day. More recently, I would have to restart AT multiple (sometimes up to 30) times before it would start working. Again, once working it was good to go for the day.
I contacted Lowrance and they said my AT box was probably going bad. They sent me a new box and transducer and I installed it yesterday. Per their instruction, I updated the Carbon to the latest release. (23.3-67.3.32) I then tried to update the new AT box and I’m getting a “Update timed out” error. The lights on the box are showing normal operation. Amber/green power, flashing ethernet and solid transducer. Tried a new ethernet cable and I got the same result. Has anyone had the “update timed out” error before?