Raw BIOS image named SterEX 31, a 1.00 MB BIN file whose name gives no clear board number, chipset or revision. The size fits an 8 Mbit SPI flash chip. Without identifying details, use it only when you are sure it matches your board, for instance by comparing the contents with a dump read from the existing chip. Such files are written with a programmer like a CH341A to restore corrupted firmware. Always save the original chip contents before flashing so you can revert 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 @laptop_bios_schematic. 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 →