I shoot manual focus most of the time. The only camera I have with AF is my Nikon F100, and sometimes I am glad to have it...
Nine years ago I tried digital and hated it. I only own film cameras now. What I remember about firmware is that it was used to fix problems. My first thought about this lens is, "What the XXXX? This lens seriously plugs in?" Secondly...what is wrong with it that you have to plug it in?
I am far out of the loop with digital technology (thankfully)...