Firmware dump in a 4.85 MB ZIP for the Wistron board 11068-1, which the name also identifies as MIB75R MH_SG MLK MB. This board is used in Dell Inspiron 660 and Vostro 270 desktops, consistent with the Intel B75 chipset hinted by the name. Write it to the board's SPI chip with an external programmer. Before flashing, read and keep the original contents, and make sure the image length matches the flash capacity.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →