Flashing bios doesn't necessarily depend on OS. However if you want to do with on Linux then do it with flashrom.
Here you can see how to do it.
edit: Example
Install it:
$ apt-get install flashrom
Detect whether flashrom knows about your chipset/mainboard/BIOS chip:
$ flashrom
Read the BIOS image into a file:
$ flashrom -r backup.bin
Write a BIOS image (proprietary or LinuxBIOS) on the ROM chip:
$ flashrom -wv newbios.bin
WARNING: This will overwrite your current BIOS! Make sure you know what you're doing!
Here you can see how to do it.
edit: Example
Install it:
$ apt-get install flashrom
Detect whether flashrom knows about your chipset/mainboard/BIOS chip:
$ flashrom
Read the BIOS image into a file:
$ flashrom -r backup.bin
Write a BIOS image (proprietary or LinuxBIOS) on the ROM chip:
$ flashrom -wv newbios.bin
WARNING: This will overwrite your current BIOS! Make sure you know what you're doing!
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