A Lenovo BIOS image for the NM-C631 mainboard, 32 MB in size, with no model, revision or version stated in the name. The NM- prefix is the numbering pattern used by LCFC, the Lenovo-owned manufacturer of ThinkPad and IdeaPad boards. A 32 MB image is likely to span more than one chip or a 256 Mbit device, so check the flash layout on the board before writing. Dump and save the existing contents with an SPI programmer first, since serial numbers and machine-specific data live in the original chip.
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 @schematiclaptopramkushwaha. 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 →