Oh dang, where did you find that relic?! Those were the first plugs we've ever sold and there are about 500 in the wild before we were allowed to sell under our own name.
Anyway, those unfortunately do not have the capability to be upgraded as it was original firmware made by the manufacturer (whereas the Inovelli ones -- non-Show Home we put the OTA capabilities on later).
However, to answer your question Hubitat does allow you to update the firmware via OTA using this: [RELEASE] Z-Wave Firmware Updater
But again, unfortunately, this model (Show Home) does not allow OTA updates.
