Can I downgrade Logitech K375s keyboard firmware? And is there a way to backup the current firmware on the keyboard before I do so? · Issue #2044 · fwupd/fwupd · GitHub
Wireless keyboard problems | Crimson Wall
Cannot update Logitech Unifying Receiver (version of org.freedesktop.fwupd incorrect: failed predicate [0.9.2 ge 0.8.1]) - Ask Ubuntu