Raw 8 MB BIOS binary for Lenovo board NM-B321, the LCFC mainboard numbering used on IdeaPad models. Only the board number appears in the name, so the exact model, version and whether the ME region is clean are unknown. The size fits a 64 Mbit SPI flash, common on this generation. Write it with a programmer such as a CH341A or RT809. Read and keep the original first, since it holds the serial and other board-specific data, and confirm the chip capacity matches.
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 @bioshub. 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 →