BIOS image for a laptop motherboard numbered DA0FB3MB6D0, revision D, packed in a RAR archive of 2.62 MB; the name states a 4 MB flash size. DA0 numbers ending in MB plus revision codes follow Quanta's board numbering, so the board maker is Quanta regardless of the laptop brand on the lid. Extract the dump, verify the PCB silkscreen shows the same number and revision, back up the existing SPI chip, and confirm the image is exactly 4 MB before programming it with a CH341A or similar tool.
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 →