Updating bios without cpu
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.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.If you can't seem to get the motherboard to update on its own, you'll need to do it manually using a USB drive.
All of your existing microcode will remain untouched and won't be updated or removed.
These CPUs are brand spanking new, and so are likely to not be supported by the BIOS versions factory installed on most motherboards.
Most BIOS update procedures require an older, supported CPU.
If you have an AMI BIOS, check out this guide instead.
Note: Microcodes are current as of 2018-12-02 (source). 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).