As a security measure, Intel does not provide bios updates in .bin format. You should be very concerned when attempting such.
You can get the .bio file here, and use the recovery method for installing this bios on your board:
https://downloadcenter.intel.com/download/23825/BIOS-Update-SIX7910J-86A- Download BIOS Update [SIX7910J.86A]
Also, including your email address is a big mistake, as it will certainly invite spam.
I will say something more: It is certainly possible (with the right hardware and software) for someone to take an image from the flash IC on one board and load this image onto another board of the same model. In so doing, however, you are creating a duplicate system. By duplicate, I mean that they will share Serial Number and MAC Address. Bottom line, don't do this for anyone who asks. Do you really want them using your Serial Number and MAC Address?