BIOS archive for the Lenovo ThinkPad Edge E531 with motherboard NM-A044, revision 1.0. The NM- prefix is the LCFC numbering used by Lenovo's own ODM operation. The 5.20 MB RAR likely contains one or more flash images for the board's SPI chips. Extract it and match each image to its chip by size before programming. Confirm the board number and revision on the PCB, and back up every original chip, since ThinkPad firmware can hold serial and security data.
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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →