Working BIOS for an ASUS N53SV with main board revision 2.1, saved as a 4 MB .bin. That size suits a 32 Mbit SPI flash chip. It is used to restore a board with corrupted firmware by programming the chip directly with an external programmer. Check that the revision printed on the PCB is 2.1, since different revisions may need different images. Keep a backup of the existing chip, as it can hold serial and licensing data, and verify the contents after writing.
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 @bios_laptop. Enginerys does not host this file.
How to open a .bin file
A raw, byte-for-byte image of a flash chip: the main BIOS / UEFI, the embedded-controller (EC) firmware, or both.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →