Raw 8 MB BIOS binary for the ASUS X556UV, board revision 3.1. The size corresponds to a 64 Mbit SPI flash chip, so it is meant to be written as a full image with a programmer like a CH341A or RT809 when the laptop is bricked or will not show an image. Check the revision on the PCB, and save a copy of the original chip before flashing, since it holds the serial number, MAC address and other board-specific data. Carry those details over to the new image if needed.
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 .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 →