BIOS firmware archive for the Lenovo ThinkPad X1 Carbon 9th Gen, machine type 20XX, packed as a RAR of about 12.1 MB. The name gives no board number, revision or version, so open the archive and inspect its contents before use. Technicians use such dumps to recover a laptop with corrupted firmware by writing the image to the SPI flash with a hardware programmer. Read and save the original chip first, since it holds serial and system data, and confirm the image size matches the flash 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 @biosfilebins. 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 →