Firmware archive for the ASUS X551CA, board revision 2.2. At 7.31 MB the RAR may hold a full SPI image, possibly with additional files, so check what is inside before writing. Technicians use it to restore a laptop with corrupted BIOS using an external programmer on the flash chip. ASUS prints the model and revision on the mainboard, which should match the file. Save the original chip contents first, as they include unique system data, and confirm the image size matches the chip.
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 →