Can we modify CPU firmware?

[Keyser Söze]

Hi, guys! As stated in the title, I was wondering if it's possible to work around CPU firmware so we can unlock its multipler. Let's take Q9650 and x3380 as an example, both share the same chip same technical specifications except xeon has 9.5 while C2Q got 9.The point is can we turn Q9650 into x3380?

[DeathBringer]

Microcode has unknown internal format and have the digital sign. So it can't be modified.

[Keyser Söze]

Aha I got you. Thanks for replying!