BIOS firmware for the Lenovo ThinkPad X1 Yoga 3rd Gen, covering machine types 20LD, 20LE, 20LF and 20LG; the name is truncated and gives no board number or tested status. The 8.32 MB RAR archive should be unpacked and its contents checked, since the exact type and board are unconfirmed. Use it for SPI reprogramming with an external programmer only after matching the board label on the PCB. Back up the original chip first and confirm the image size corresponds to the flash capacity 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 @generalbios. 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 →