/usr/lib/systemd/system-shutdown
Edit: /usr/lib/systemd/system-shutdown/fwupd.shutdown (252B)
#!/bin/sh
# no history database exists
[ -f /var/lib/fwupd/pending.db ] || exit 0
# activate firmware when we have a read-only filesysten
if ! /usr/bin/fwupdtool activate; then
ret=$?
[ "$ret" -eq "2" ] && exit 0
exit $ret
fi