BIOS for a desktop board labelled H81M-DS2.SI, version 3.0, in a 5.67 MB RAR. The H81M-DS2 name matches a Gigabyte micro-ATX model on the Intel H81 chipset, and V3.0 likely refers to the PCB revision, which matters because firmware for different revisions is not always interchangeable. Use it to recover a board that will not post after a bad update by writing the SPI chip with a programmer. Back up the existing contents and confirm image size against 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 .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 →