If you don't know what your CPUID is, check out the following guide: How to get the CPUID, Stepping, or s Spec for an Intel CPU.
It should also work for adding LGA 771 Xeon support to an LGA 775 BIOS.
All of your existing microcode will remain untouched and won't be updated or removed.
This method may not work if you're trying to update the microcode for a processor that's already supported by your BIOS (you should use method 1 instead).
There's an element of risk just flashing a normal BIOS, and especially when you start modifying it, so please attempt this mod at your own risk (and only if you're experiencing some problem).
We highly recommend that you don't flash the modified BIOS unless you've verified the microcode was added correctly.
If you accidentally remove the microcode that your processor needs, your system may fail to boot.We are not responsible if your system is damaged while attempting this.The following microcode is only compatible with method 1 of this guide (it's in a combined NCPUCODE. This makes it easier to update all of your microcodes at once.This is necessary to stop cbrom from overwriting this file with your old microcode. Read this First, try one of the smaller, alternate microcode files mentioned earlier.The following command will delete all of the original microcode and replace it with the new microcode (which is in ncpucode.bin). If that doesn't help, you probably have a BIOS that doesn't support the method of updating the microcodes, and you'll need to use the 2nd method instead.The following command will show you a list of all of the microcodes in your BIOS file: You should verify that the microcode for your processor's CPUID is present.