A BIOS / firmware dump for Lenovo hardware (board NM-B351). Shared as “Lenovo ThinkPad A475 Type (20KM) (R04ET45W) BIOS 16MB.rar” — a .rar file, 6.37 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 @Laptopbiossolutions. 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 →