A BIOS / firmware dump for Lenovo hardware (board NM-A181). Shared as “NM-A181.7z” — a .7z file, 3.07 MB.
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 @jdbios_world. Enginerys does not host this file.
How to open a .7z file
High-ratio compressed archive, often used for large BIOS collections.
7-ZipWinRARKeka (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →