I will give you a slightly different answer than the ones you had from the same question in another forum
The system status screens are available from the H body menu, these show versions of firmware on attached lens and viewfinder. Both my native H lenses show 10.0.0 and I suspect this is a holding/type/version number rather than a true firmware. (The menu also shows the number of lens shutter activations.)
Having said that the very early HC80mm lenses had a focussing issue which was a factory FOC upgrade/fix which allegedly required a firmware update as well. The early lenses had chrome screws attaching the lens bayonet, later and upgraded ones had black screws. My 80mmHC was a chrome screw version and has been upgraded FOC by Hasselblad, unfortunately I took no notice of the menu report of the "firmware" before the factory visit.
I have never seen a lens firmware issued, there have been user firmware updates for some viewfinders and of course for bodies and backs as well as the GPS system.
No doubt an e-mail to Hasselblad support would clarify.