BIOS dump for the ASUS X550LD, board revision 2, tested and marked OK. The 8 MB size matches a 64 Mbit SPI flash, the usual capacity for this generation of ASUS laptops. Revision matters on X550-series boards, so confirm REV 2.0 on the PCB silkscreen before writing. Program it with an external SPI programmer after saving the original chip contents, and expect the donor serial number and other DMI data to need correcting afterward.
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 @biosbigarchives. 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 →