If you are experiencing an update error on a Debian based distribution, similar to:
A package failed to install. Trying to recover:
dpkg: dependency problems prevent configuration of fwupd:
fwupd depends on libfwupdplugin5 (>= 1.7.7+f); however:
Package libfwupdplugin5:amd64 is not installed.
it's likely that you've got multiple versions of libfwupdplugin installed.
At this point, remove the older plugins with the following command in Terminal:
sudo dpkg --remove libfwupdplugin4
And then install the new requirements with:
sudo apt -f install
You will then be able to install the software updates again.