BIOS file for the ASUS X550CC, labelled v2.0 and 8.00 MB in size; v2.0 most likely refers to the board revision, though the name does not say so explicitly. Check the version on the motherboard silkscreen before use. The image fits a 64 Mbit SPI chip and is meant for direct programming with a hardware programmer. Save a backup of the chip currently installed, confirm the file length equals the chip capacity, and remember that serial or MAC data from the donor may be included.
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 →