BIOS firmware for the ECS H81H3-M3S desktop motherboard, version 1.0 as stated in the name, packed as a 3.65 MB ZIP archive. The H81 in the model points to an Intel H81 chipset board for LGA1150 processors. Technicians use such an image to recover a board that fails to POST after a corrupted update by writing it to the SPI flash with a CH341A or similar programmer. Read and save the original chip contents first, confirm the board model on the PCB silkscreen, and check that the image size matches the flash chip 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 →