BIOS image for the Gigabyte GA-P67A-UD4-B3 motherboard, a 4 MB raw binary. The B3 suffix refers to the version using the B3 stepping of the Intel P67 chipset, which fixed the SATA issue of earlier steppings. The file is suited to writing directly onto a 32 Mbit SPI chip with a programmer when a board will not boot. Check the model and PCB revision, note that Gigabyte DualBIOS boards carry two chips, and back up the original contents first.
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 @BiosSchematicWorld. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →