I just did this to flash my BIOS and it flashed successfully.
Also, as a warning to anyone who does this, my linux boot became unbootable after going through this process, due to the issue I mentioned in this thread:
The short version is that the windows installer doesn’t play nice, this is despite not clicking anything and going straight to the command line per the instructions.
It wasn’t that big of a deal because re-installing GRUB is fairly easy, but you may want to make sure you have the tools on hand to do this in case it happens to you.