Firmware image for the ECS H81H3-M4 desktop motherboard, an Intel H81 platform, marked OK by the person who saved it, meaning it was reportedly tested. No board revision or flash size is given in the name. The 3.55 MB rar should hold a dump for direct SPI programming. Before flashing, compare the extracted file size against the capacity of the chip on your board, save the original contents, and check the PCB revision silkscreen, since different revisions of the same model can need different images.
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 →