My current version of F5 SSL VPN is 7183 (see here), then I downloaded the update (version 7184) debian file, and when I open the .deb file, it leads to Ubuntu Software (here) and nothing's wrong up until this point, except that Update (or Upgrade, you get the idea) button is missing, only Remove button remains there.
Since I upgraded my workstation to Ubuntu 20.04, I can't upgrade via .deb file anymore.
It's making things tricky, especially for software/app you installed without using apt.
I know we can add the source to PPA so we don't need .deb anymore (included in apt update and apt upgrade instead) but it's too painful to register each of them to PPA, and I just want to use this deb file I download from internet every time they got an update (like dbeaver-ce).
Is it new "feature", expected, or bug (only found on Ubuntu 20.04) ?
How to upgrade this way (without using PPA) ? Remove and install them using newly deb file everytime I download new deb file?
An equivalent of that action would be using
dpkgcommandIt will install and/or update (if it's existing) the software to your machine.