BIOS or firmware binary whose name, simply 850, gives no reliable clue about the brand, model or board it belongs to. It is a 4.00 MB raw image, the size of a 32 Mbit SPI flash chip. Before using it, confirm the source machine independently, for example by opening the image in a hex editor and looking for vendor strings or version text. Only write it with a programmer after backing up the original chip. Flashing an unidentified dump onto the wrong board can leave it unbootable.
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 →