Small 118 KB RAR archive for Lenovo ThinkPad models referred to as 15-14 Type-C, marked tested. The name gives no board number, and the tiny size suggests firmware for a separate chip, such as a USB-C or power-delivery controller, rather than a full BIOS dump. That reading is an inference, so inspect the contents before use. Identify the target chip on the board, read and save its original data with a programmer, and write only to a chip of matching 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 @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 →