Raw 16 MB BIOS binary named after Lenovo board NM-B481, an LCFC numbered motherboard. The name gives no laptop model, so confirm the board number on the PCB before use. A 16 MB image corresponds to a 128 Mbit SPI flash chip, and it is written with a hardware programmer to recover a dead or bricked board. Read and keep the original chip contents, since they hold the serial and possibly keys, and ensure the chip capacity matches the image.
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 @efibios. 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 →