Firmware package for the ThinkPad E420s on the Compal LA-6921P board, revision 1.0, UMA variant with integrated graphics only. The name states that both the system BIOS and the EC firmware are included, which matters on ThinkPads where the embedded controller handles power-on and charging. The 2.26 MB RAR archive needs extracting before use with an SPI programmer. LA-xxxxP numbers follow Compal's scheme. Verify that the board is the UMA version, not a discrete-graphics one, and back up the existing chip first.
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 →