I updated to 220.127.116.11 yesterday (from .140) and immediately ran into problems. The web interface hung at the point where it said it was rebooting the hub. Eventually, I closed the Chrome tab and tried to log back into the web interface. But I can no longer access it: my connection times out, or I get an error message that the server is unreachable. Yesterday, when I used the Find Hub features on the web (through https://my.hubitat.com/ and https://portal.hubitat.com) and on my Android app, the hub was quickly located -- but I still could not get access to it. I power-cycled it this morning, in the hope that might solve things, but the only effect has been to make it difficult to find the hub. Now, I have to put the MAC address in using the "advanced discovery" menu to find the hub. I also cannot access the Diagnostic Tool. I get essentially the same error messages as when I try to access the hub.
It seems logical to conclude the update has caused a problem. Is there any way to roll it back without the Diagnostic Tool?
I tried the diagnostic page -- it does not connect.
I tried the rest button -- the round hole in your picture. By "hard reset," do you mean that button? Powercycling it? Factory reset? I have powercycled it but have not factory reset it. Saving that for last if nothing else works.
So to recap, you have a green led (not blue)
You did a network reset by pushing the reset button for at least 7 seconds and even after that (and powercycling the hub)
The diagnostic page at http://hubitat.local:8081
(Not the ip but explicitly hubitat.local) is unreachable….