Can i downgrade the Bios? or is it pointless?

[allthegoodmemesaretaken]

Gigabyte z270x Aorus Gaming 5... I've experienced some performance drops since i installed the latest bios which contains a "cpu microcode update" and I would like to go back to one of the following:

 

https://www.gigabyte.com/Motherboard/GA-Z270X-Gaming-5-rev-10#support-dl-bios

 

Let's say i don't care about the security patches and i roll it back to the F7 version, the biggest question is...

 

Would that remove the cpu microcode update?

 

Or is it pointless since it won't remove the microcode update from the CPU?

 

Thanks in advance for any help you are able to provide.

[mxk]

im pretty sure you can. I found a tomsharware forum post about downgrading to older versions than you, but I think what they still say applies.

http://www.tomshardware.com/answers/id-3482637/downgrade-gigabyte-bios.html

Not sure if it will apply to your newer z270 mobo bios, but based on what they're saying I think it should.

I'm sure if you look up "downgrade gigabyte z270 bios" you'll find some stuff, thats how I found the post.

[KarathKasun]

Microcode updates are NOT on the CPU.

[RollinLower]

You d finitely can just go ahead and flash an older BIOS on your board.

If it is a good option, I'm not so sure tough. The microcode updates are probably related to security, hence the performance drops. 

If you don't really care about that tough and you don't have sensitive data on your PC then definitely go ahead and downgrade your BIOS! 

[Mira Yurizaki]

You should be able to feed the BIOS updater any BIOS and it should happily take it. Though I can see some manufacturers going "this is an older version, not 'updating' to it."

 

For those there are tools available to force update the BIOS to an older version, but let's see if the "obvious" answer works first.

[Sauron]

Be aware that the patch is probably for meltdown, which is a pretty serious security flaw...

[mxk]

19 minutes ago, Sauron said:

Be aware that the patch is probably for meltdown, which is a pretty serious security flaw...

oh yeah, that old thing. lol!

[allthegoodmemesaretaken]

25 minutes ago, Sauron said:

Be aware that the patch is probably for meltdown, which is a pretty serious security flaw...

Just to be sure... if i downgrade the Bios to an older version, Would that remove the Spectre/Meltdown patch? or it's saved somewhere else in the CPU.

[KarathKasun]

1 minute ago, allthegoodmemesaretaken said:

Just to be sure... if i downgrade the Bios to an older version, Would that remove the Spectre/Meltdown patch? or it's saved somewhere else in the CPU.

The CPU cant save anything, so its not in the CPU.

[Sauron]

14 minutes ago, allthegoodmemesaretaken said:

Just to be sure... if i downgrade the Bios to an older version, Would that remove the Spectre/Meltdown patch? or it's saved somewhere else in the CPU.

It would be gone.

20 minutes ago, mxk. said:

oh yeah, that old thing. lol!

Old or not it lets anyone do anything on your pc remotely without leaving any trace - if left unpatched.