Windows does have a fallback mode called safe mode and that’s exactly what’s being used to fix this utter mess.
The other fix was reboot your Windows computer at least 15 times.
Package management isn’t going to save you from this as it didn’t save the Linux systems affected last time. It didn’t stop Arch Linux from failing to boot after a Grub update either.
Not everyone was affected though :
How come not everyone was impacted?
Prior to the most recent version, grub only registered the fwsetup if detected support. If your machine detected support, you would have had the fwsetup command registered and the failure wouldn’t occur.
Yes, gdebi :