@artfulrobot I feel your pain. Mine is still down as well. I tried doing an offline update using these instructions:
But apt-offline keeps giving me errors. So I’m not sure if it didn’t install properly or if I’m not using it properly.
Now I’m trying to back up my system using an app called Timeshift which supposedly backs up all your settings and applications:
If that works I’ll try reinstalling the OS.
Good luck on your end. And please post an update here if you find an workable solutions.