Make sure however, that you always get the BIOS executable and NOT the Windows executable.
You then have one of two options: create a ISO or install the image for your bootloader.
So, all you need is a bootable floppy disk image with Free DOS kernel on it.
By far the easiest way to make a bootable Free DOS USB Stick is using ).
By disabling fast startup, your system will completely shut down when you turn off your computer without holding down Shift while clicking Shut Down.
This will allow you to enter BIOS upon restarting your computer.
See fwupd for further information about installation and usage.
Bios Disk simplifies the process of flashing your system BIOS under Linux. To use the biosdisk utility to create a BIOS flash image, first download the latest raw BIOS image for your system from your manufacturer's website.
The following procedure worked to upgrade an Inspiron 17-3737 to the A09 BIOS.(Dell offers this as a possibility on their site) Some notes before starting: If your flash image is too large for a floppy, go to the Free Dos bootdisk website, and download the 10Mb hard-disk image.This image is a full disk image, including partitions, so adding your flash utility will be a little trickier: First find the first partition (at time of writing, the first partition starts at block 63; this means that the partitions starts at offset thus leaving more space for the flash utility and new BIOS image. Copy your BIOS flash utility and new BIOS image to the mounted floppy disk image.For example: Finally reboot your machine, making sure the CD drive is first in the boot sequence, and run the BIOS upgrade procedure when the CD boots.If using the GRUB method, choose the new entry on the list, and it should boot into Free DOS. It has worked on Lenovo laptops like X220, X230, X260, W540, T450 and T450s.