I was running 19.07.0 and tried to do a upgrade to 19.07.1 via the Flash New Firmware Image link. I selected to retain settings and after the router rebooted I was still running 19.07.0. I had a similar problem going from 18.06.4 to 18.06.5 as detailed R8000 won't upgrade from 18.06.4 to 18.06.5.
A helpful forum user suggested that I use SSH to upgrade and that worked previously. Now when I try to connect via SSH I get connection refused. I don't even get the username prompt so it appears like port 22 is closed.
I can login via LuCI and everything appears to be running fine. Will I be able to troubleshoot this via LuCI only and if so, how?
trendy, before I saw your response I tried something else. I flashed the 19.07.0 image. Still no SSH. Then I restored my backup config that I took immediately after upgrading and configuring 19.07.0. This step has restored SSH connectivity. My wife is currently trying to get some work done so I have to postpone my next upgrade attempts for a while.