Working BIOS dump for the ASUS X540MAR laptop, mainboard revision 3.1, for the version with an Intel N4020 CPU and integrated Intel HD graphics, stored as a 6.49 MB RAR. A full image like this restores a board that stays dead or shows a black screen after firmware corruption, written to the SPI flash with a programmer. Match the revision on the PCB and the CPU variant, save the original chip contents first, and verify the file size equals the chip capacity.
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 →