A BIOS / firmware dump for Lenovo hardware (board NM-A043). Shared as “THINKPAD E431 NM-A043 REV1.0 8M PCH BIOS U5.rar” — a .rar file, 2.60 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 @SCHEMATICWORLD. 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 →