fwupdate -V (return code: 3)
fwupdate: invalid argument: "version"
fwupdate --help (return code: 0)
Usage: fwupdate [OPTION...]
-a, --apply=<guid> <firmware.cap> Apply firmware updates
-l, --list List supported firmware updates
-s, --supported Query for firmware update support
-q, --quiet Work quietly
Help options:
-?, --help Show this help message
--usage Display brief usage message