Modern BIOS/UEFI is much easier.
Download the file - it may be an .exe but that's fine - and copy it (not like writing it to disk as an ISO, just copy it) to a USB thumb drive.
Boot your computer.
At POST, enter the setup menu (an F key, and look for an Fn key if on a laptop so that you're sure to be selecting the F key and not the Fn key).
In the setup menu, find the update BIOS/UEFI menu option.
It's a handy GUI these days, so you can use your mouse to pick it.
It'll happily find the .exe and update the BIOS/UEFI in just a few seconds.
In some instances, or in at least one instance, it simply noticed that there was an update available in the USB (when entering the setup menu) and presented it as an option. I've only seen that once, so I don't want to call that normal.
Either way, the key point is just copy it to an external disk, boot to the setup menu, and find the update option. There may be a dedicated option, but it's not too challenging.
I would suggest making sure that you do so when you have consistent power from the grid. While the process is short, it can be a pain in the butt to fix things if the update is interrupted.
BUT... Good news! You can usually recover with just software these days! I 'member harassing a poor telephone jocky until they sent me a new BIOS (on a chip) that I had to insert into the motherboard.
Download the file - it may be an .exe but that's fine - and copy it (not like writing it to disk as an ISO, just copy it) to a USB thumb drive.
Boot your computer.
At POST, enter the setup menu (an F key, and look for an Fn key if on a laptop so that you're sure to be selecting the F key and not the Fn key).
In the setup menu, find the update BIOS/UEFI menu option.
It's a handy GUI these days, so you can use your mouse to pick it.
It'll happily find the .exe and update the BIOS/UEFI in just a few seconds.
In some instances, or in at least one instance, it simply noticed that there was an update available in the USB (when entering the setup menu) and presented it as an option. I've only seen that once, so I don't want to call that normal.
Either way, the key point is just copy it to an external disk, boot to the setup menu, and find the update option. There may be a dedicated option, but it's not too challenging.
I would suggest making sure that you do so when you have consistent power from the grid. While the process is short, it can be a pain in the butt to fix things if the update is interrupted.
BUT... Good news! You can usually recover with just software these days! I 'member harassing a poor telephone jocky until they sent me a new BIOS (on a chip) that I had to insert into the motherboard.
