Firmware update from external hdd

I am using linux as my daily driver on the internal SSD. I’m going to install windows on my 250Gig ExpansionCard for the rare occasions I need windows. Is it possible to do firmware upgrades from there, or must it be the internal ssd because of some crazy “usb-controller-gets-initialized-during-upgrade-so-windows-will-crash-if-booted-from-usb” reasons?

Thanks :slight_smile:

Yes, I’ve done firmware updates that way.