BIOS binary for the Lenovo NM-B861 motherboard, revision 1.0, an LCFC-made board. The 32 MB .bin is a full flash image ready for an SPI programmer, though the name does not state whether it was tested. Because no working status is given, treat it with care and keep your own backup of the chip before replacing its contents. Check that the flash chip on the board is 32 MB, since a mismatched image will not fit, and that the revision silkscreened on the PCB matches 1.0 before writing.
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 →