BIOS dump for the Lenovo ThinkBook 13s G2 ITL, board 19869-1, labelled as working and fully verified, archived in RAR form. The board number uses Wistron numbering, the ODM that manufactured this motherboard for Lenovo. Technicians flash an image like this onto the SPI chip with an external programmer to recover a unit that will not post or has a damaged firmware region. Read and keep the original contents first, since serial and key data may need to be transplanted, and verify the PCB number before writing.
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 →