It is pretty clear from your other thread that you have a mesh issue. If you want to post a list of devices in use on that thread, there’s a lot us who would like to help.
I’ve never seen a hub update destroy a mesh. A bad device, or not enough repeaters, absolutely.
You mentioned that you shut your hub off for several hours. You do know that when you do this, it can take 24-48 hours for your mesh to rebuild.
