Run “run.nsh” in Efi shell
or manual type in following command “eeupdate64e.efi /NIC=1 /MAC=************”command,  **** is the specified MAC address, for example: 00E04C000144

once done following message should appear
1： Updating Mac Address to 2CFDA16D7ABO... Done.
1： Updating Checksum and CRCs... Done.
Indicates that the flashing is successful 

If there are two or more Intel network controllers on the motherboard, then will need to modify the number after "nic=" in the command line to write the MAC address of the second or third network card, for example

eeupdate64e.efi /nic=2 /mac=XXXXXXXXXXXX

Note: The first flashing is valid, and the second time it does not take effect, you can reflash the BIOS and flash again