Firmware archive for the Intel DH67BL desktop motherboard, an H67 chipset board from Intel's own desktop board line. The name gives a 4MB image size, which should match the capacity of the SPI flash chip on the board. Technicians use a dump like this to recover a board that will not POST after a failed update or a corrupted chip, writing it with a CH341A or a similar programmer. Read and keep the original contents first, because they may hold the board's own identity data, and check that the image size fits the chip before flashing.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →