BIOS dump for a board coded TOBACCO, revision A, sized for a 16 MB flash chip, packed in a 6.48 MB RAR archive. The name gives a project code, not a laptop brand, so identify your board by the code printed on the PCB before use. Images like this are written to the SPI flash with an external programmer to recover a board that has corrupted firmware or will not boot. Back up the original chip contents first, and make sure the extracted file is exactly 16 MB so that it fits 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 →