BIOS dump for the Lenovo ThinkPad T450 on mainboard NM-A251, revision 1.0, stored as a 6.18 MB ZIP archive. The NM-xxxx pattern is used by LCFC, the Lenovo joint venture with Compal that builds many ThinkPad boards. Technicians program such an image into the SPI flash with a clip and programmer to recover a dead or locked board. ThinkPads keep serial number and UUID data in firmware, so read and preserve the original chip and confirm the board number before writing.
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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →