BIOS file for the ASUS U53F notebook mainboard, revision 2.1, packed as a ZIP of about 1.7 MB. ASUS prints the model and REV on the PCB, and that marking should match before the image is used. The typical job is reprogramming the SPI flash with a hardware programmer after a failed update or a dead board. Back up the existing contents first, since they may hold serial numbers and the MAC address. Confirm that 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 .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →