I've had a devil of a time using a custom package from my Adobe admin console to install CC 2020 on out lab computers. No matter what I try, it consistently failed on about 25% of the computers.
I've resorted to logging into the computers and manually updating them using the Creative Cloud desktop app, but that is pretty tedious since I have around 40 more computers to update.
I've been using RUM to manage point updates, but I can't find any way in the documentation to install major updates. I've tried forcing it to install the 2020 versions using the parameter --productVersions=PHSP#21.0.2 (for example) but it doesn't find them.
Am I missing something in how RUM can update, or is a major version update too much to ask of it?