Method depends on make and model.
Newer Bios's may support new CPU's, be general fixes or just an update.
If not needed or unsure DO NOT DO IT, you could render your Motherboard useless.
This is just for own Interest
How do you update a bios? and more importantly when and why do you do this?
How do you find out what version of the bios you have.
Is it somthing in th utilities
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