What is firmware
Firmware is the low level software in integrated circuits that controls how a certain piece of hardware should work.
In most cases you will have to use Windows and the correct software from the vendor to update you device firmware, this is important as bug fixes or features could be added to your device directly from the vendor.
pamac install fwupd
pamac install fwupd-efi
Pamac does not support firmware updates, alternatively you can install gnome-firmware as your firmware tool with a user interface, that also comes as a default with our Gnome edition.
pamac install gnome-firmware