Compressed BIOS image for a motherboard model coded SG-81, stored in a 349 KB ZIP. No brand or chipset is given in the name, so identification relies on the model code printed on the board itself. Files of this kind are typically desktop BIOS images flashed either through a vendor utility or with an external programmer on a socketed or soldered chip. Unpack it, compare the image size with the flash chip capacity, and keep a backup of the existing BIOS before writing anything.
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 →