Foxconn often releases different BIOS files for different revisions of the same board (e.g., Rev 1.0 vs Rev 2.0). Look at the physical motherboard; usually printed in white ink near the CPU socket or the bottom right corner will be the revision number.
Updating the BIOS for the Foxconn H61MXL-K is often sought out to fix compatibility issues with modern GPUs (like the GTX 960) or to add support for 3rd Gen Intel "Ivy Bridge" CPUs. Finding the BIOS Files foxconn h61mxl-k bios update