Using some tips I read on lemmy.ml, I was able to use the Windows installer for the current BIOS version without having Windows on my laptop.
You can flash Windows onto a USB stick, or optionally use Ventoy to boot from the downloaded ISO.
- Put the downloaded BIOS installer on a separate USB stick
The following is optional if you want to use Ventoy:
- Flash ventoy on a USB stick.
- Download a Windows ISO of choice, and copy the ISO file onto the USB stick.
- Using Ventoy, boot into Windows.
Otherwise, use a Windows boot medium.
- When booting into the Windows installer, do not continue the installer, but select “Repair my PC”.
- Select “Troubleshoot”, and then “Use command prompt”.
- Go to the drive with the BIOS installer. In my case, it was D:
- And execute the BIOS installer file.
That’s it!