Warning:
Because BIOS flashing is potentially risky, if you do not encounter problems using the current version of BIOS, it is recommended that you not flash the BIOS. To flash the BIOS, do it with caution. Inadequate BIOS flashing may result in system malfunction.
Update CPU ID/Micro codes in new BIOS means?
[1] To support new series of CPUs, or [2] To support the same CPU but with new stepping.
CPU support of motherboard is consist of BIOS and hardware design, detail CPU support information please see CPU support list.