4.00 MB BIOS dump for a K43LY motherboard revision 2.0, a model in the ASUS K43 line, repeatedly marked in the name as working. It is a raw image intended for the 32 Mbit main SPI flash. Technicians write it with a CH341A or similar programmer when the board has no POST, no display or a failed BIOS update. Check the revision marking on the PCB before use, since K43 variants differ, and keep a backup of the original chip so the serial number and system data are not lost.
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 .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →