A second copy of a clean K46CM BIOS for ASUS, likely a duplicate save going by the (1) suffix. The raw 8 MB file should correspond to a 64 Mbit SPI flash chip. Compare its checksum with the other clean K46CM image before choosing between them, since identical files add nothing new. Typical use is reprogramming a corrupted BIOS chip on the bench with a clip or after desoldering it. Always dump and archive the existing contents and verify the write before reassembling the laptop.
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 @abgm_manutencao_bios. 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 →