We currently have no plans of adding support for firmware updates. Although not tested you could attempt to setup a Custom Action to push out a script to your client machines. Here is more information about Customer Actions: How To: Perform a Custom Action Complete Tutorial with Custom Actions
Charles, thank you.
Altough this implies that I need to follow the updates, know which machine needs what, etc.
It would be so much easier if this could be done like the os-patches.
I filed a feature request, so maybe some day...
Have a nice day