I think that in times like these there is always a certain risk of depending on the latest version. This has nothing to do with Line 6, it concerns the whole technology.
I don't think professionals would change their equipment in the middle of a tour without need.
I changed the version without any problems and played a GIG, but I was aware of the risk, which I ignored according to the motto "no risk - no fun".
An emergency backup for a worst case is always with me.
It was important to read the description carefully and to follow the given procedure. As a non native speaker even I have managed to do this to some extent.
I feel sorry for everyone who had stress with the update, but I think that a certain risk awareness for the situation and personal responsibility should not be missing.