A BIOS / firmware dump for Lenovo hardware (board DA0BM5MB8D0). Shared as “AFS Lenovo_E5400_B5400 Quanta_BM5_DA0BM5MB8D0_Rev D.rar” — a .rar file, 4.99 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 @afsbiosfree. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →