ASUS K55A firmware packed in a 2.42 MB RAR archive, with no board revision or BIOS version mentioned in the name. Being smaller than other K55A packages, it may contain a single compressed dump, so unpack it and confirm the image size before flashing. Use it to restore a laptop with a corrupted BIOS by writing the SPI chip with an external programmer. Read and keep the current chip contents first, and make sure the motherboard revision on your unit matches the one the dump came from.
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 →