Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
Some hardware firmware updates need a DOS environment for executing the flash tools. There are free DOS versions available to accomplish this task easily.
There are many howtos available on the net providing different solutions to the mentioned task - however, no one of these fitted my needs because most of them were too complicated, were only suitable for small flash files or only for specific mainboards or hardware components.
To solve such problems in a general way all you need is an empty CD-R (you need only one, you can use it over and over again even for different firmware updates) and a USB Mass Storage device like an USB stick.
In a first step burn the FreeDos.org image...