Firmware archive for the ThinkPad X1 Carbon 2nd generation, machine type 20A7, packed as a 3.90 MB RAR. No motherboard number, revision or chip details appear in the name, so the contents should be inspected after extraction to see whether a full SPI dump or a separate EC image is included. Such files are used to recover a board with corrupted firmware by writing the flash chip with an external programmer. Read and keep the original chip contents first and verify that the image size equals 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 @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 →