BIOS firmware for the ASUS K455L, mainboard X455LD revision 2.3, the variant with a discrete graphics chip according to the VGA tag. The name marks the dump as OK, suggesting it was tested on a working board. The archive is a 3.43 MB RAR intended for writing to the SPI flash with an external programmer when the laptop has no display or a corrupted BIOS. Check that the board model and 2.3 revision on the PCB match, back up the existing chip contents, and make sure the image size fits the flash.
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 →