BIOS and EC firmware bundle for the Lenovo Y400 on the Compal-designed LA-8691P board, delivered as a 3.19 MB RAR file. Having both the system BIOS and the embedded controller code in one place helps when a unit is dead, stuck in a power loop or has a misbehaving keyboard and battery charging. Extract the archive, identify which image belongs to the SPI BIOS chip and which to the EC, and dump the original contents with your programmer before writing anything. Check that the PCB is marked LA-8691P 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 →