BIOS image for the Lenovo ThinkPad SL400 and SL500, noted as the DDR2 version, with the board code names Rocky40 and Rocky50. Memory type matters for these models, so make sure your unit uses DDR2 before flashing this 726 KB ZIP. Technicians write such dumps to the BIOS flash with an SPI programmer to fix boards that fail to start after corruption. Read and back up the existing chip first, and confirm that the image size matches the chip capacity.
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 →