I have been searching other web resources and found something that may be it, but I don't trust it and don't want to ruin the board.
I am skeptical that you have a DQ77MK board labelled as Pegatron. Provide the AA number on the board to verify.
However, as you requested, here is the information and file you wanted.
The RELEASE NOTES can be found here:
The latest BIOS is 0074. I have attached it as a zip file:
Thank you Al.Hill. It worked great and now is the latest and greatest revision. I love VISUAL BIOS appearance and setup options. Used recovery method to flash, as, for some reason, other options have failed.
Your skepticism may have grounds, as I have more than one DQ77MK boards, and some of them say PEGATRON, others INTEL DESKTOP.... but, essentially they are all the same.