Thanks for the tip. I was having a ton of issues and eventually tried switching to Eero 7 pro. That was a disaster and worked worse than expected (strong signal, but random disconnects) despite the high cost. I then decided to give the ET12 another ...
I got the yellow light on my nodes as well with 3.0.0.6.102_36597. I was no longer able to remotely access my router through the app either. I then installed the even newer bug update firmware (3.0.0.6.102_36602) and it fixed the yellow issue. HOWEVE...