I have a similar problem. I was having difficulty with the setup utility communicating with the CA. MacBook Pro. I attempted a firmware update and the screen is now blank when I connect to the battery. I downloaded an earlier version of the setup utility but it's not for MacOS. Suggestions please?
My CA3 stopped working after not communicating with my macbook during firmware update. Now it does not display when connected to the battery. Battery is charged. Suggestions?