Original dump of 256 KB labelled leno, probably shorthand for Lenovo, though the name gives no model or board number. A 256 KB image is too small for a modern main BIOS and more likely belongs to an embedded controller or small 2 Mbit flash. Find the matching chip on the board and check its capacity before use. Read and back up the current contents with a programmer, and only write this file when you are confident it comes from the same board.
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 →