Anyone have a link to a more recent firmware for M9 v2 than 1.6.1 Build 20230403 Rel. 66598? According to the original post on 2023-07-11, everyone should have "gradually" got the new firmware...

I agree - it sounds similar to what I had experienced on my setup. In my case, one day my slave decos started to randomly drop (blinking red) but master would always be online. They would repeatedly...