BIOS dump described as working for a board labelled BS ABTK AB main board, revision 2.0, with part number 218-0792006 in the name. The 2.68 MB RAR does not state a brand, platform or chip capacity. The 218-prefixed number looks like a graphics chip marking, but this cannot be confirmed from the name alone. Compare every marking on your PCB before relying on the file. Back up the existing flash contents with a programmer and check that the image size matches the chip.
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 →