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
How to Update Your Logitech Unifying Receiver
How to Update Your Logitech Unifying Receiver
Logitech Firmware Update Tool - Download
Logitech keyboards and mice vulnerable to extensive cyber attacks | c't Magazin