Hmmm...interesting one.
For sure it can be done. Toshiba does it with a tool to upgrade the BIOS while running the OS. It's not a command prompt utility but a real Windows application.

I think this is not something that can or at least should be done by script because it affects the working of the computer and can easily screw up the working of the OS and obviously everything running on that OS.
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Mart

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