Generic MAC Address after BIOS chip swap - P8P67 Pro

[Filch]

HW :
ASUS P8P67 Pro BIOS 2103
i5-2500k

I ran into an issue with my MAC address after swapping out my BIOS chip with one I got off ebay for my motherboard.

The reason I bought this chip was because I wanted an extra one in case I screwed up the modification of the BIOS.

I've been working on getting my machine to run as a Hackintosh. I've been successful in doing so for the most part. In order to get the Intel Speedstep to work, there needed to be a BIOS hack done that unlocked two registers. It was done with the following instructions :

Use phoenixtool v1.91, load the bios file from from the Asus site that you wish to edit, wait for it to do whatever the [censored] it insisits on doing, select asus as the manufacturer, click advanced, select 'no slic' and 'allow user to modify other modules' click done, click 'go' and wait for the message telling you that 'you can now make manual alterations to modules in the dump file' - DO NOT CLICK OK!.
Open the dump folder and look for 2 19kb sized files named 2BB5AFA9-FF33-417B-8497-CB773C2B93BF_1_370 and 2BB5AFA9-FF33-417B-8497-CB773C2B93BF_1_440 (the last 3 digits may vary depending on which board and bios you are hacking around with), open both files in the hex editor of your choice and search for this hex string 80 00 18 EB 05 0D 00 80 and replace it with 00 00 18 EB 05 0D 00 00. Save both files back to the dump folder and then switch back to phoenixtool and click 'OK', it will then repack your changes back into a a new bios file BUT check the log file - if there are any errors at all do NOT attempt to flash the resulting rom.

So I attempted this on the backup BIOS I bought of ebay. It worked. Speedstep worked as designed in OSX, and I could still boot to Windows 7. What I did find though, that my MAC address was no longer unique and I've run into a couple problems as a result.

Is there a way to get the BIOS to correctly register what the MAC address should be? I have my original BIOS chip, when I plug that back in, my proper MAC address is there. Can I get the backup BIOS chip updated with this correct MAC address?

[Filch]

Any BIOS guru's out there?

I've tried afudos, but the /M switch is not available to force the mac address. I've tried dmi236 /o 1"MAC_ADDRESS", but that did not work either.
Google Music will not work b/c it relies on a unique MAC Address. Windows also thinks there is a new computer and wants to reauthorize. Is there a more appropriate forum for this request?

[sntyad]

Any BIOS guru's out there?

I've tried afudos, but the /M switch is not available to force the mac address. I've tried dmi236 /o 1"MAC_ADDRESS", but that did not work either.
Google Music will not work b/c it relies on a unique MAC Address. Windows also thinks there is a new computer and wants to reauthorize. Is there a more appropriate forum for this request?

You can try with that old thing http://www.asrock.com/support/download/K7VT4A+&K7VM3%20MAC.asp it works in real dos mode, and is necessary for some mobo's when you change/swap bios chip or when you update the bios.

Best Regards.