Firmware for the Lenovo ThinkPad L420 on Quanta board DAGC9EMB8E0, revision E. The 1.63 MB RAR contains the image for programming the BIOS SPI flash with a CH341A or similar tool when the laptop is bricked or stuck at boot. The DA-prefixed code identifies Quanta as the ODM, and the revision letter must match the PCB marking. ThinkPad flash may hold serial and UUID data, so always read and archive the original chip before writing, and confirm the image size matches.
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 →