BIOS image for the ASUS K42JR on mainboard revision 4.0, supplied as a 4 MB raw binary suited to a 32 Mbit SPI flash chip. Revision 4.0 is distinct from the 4.1 boards, so confirm the marking on your PCB before deciding which file to flash. The dump is typically written with an external programmer to recover a notebook that no longer posts or loops at startup. Save the current chip contents before erasing, since they hold machine-specific data, and verify the write once programming finishes.
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 @abgm_manutencao_bios. 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 →