Embedded controller ROM for a Lenovo board, LCFC NM-A481, in a 38 KB RAR; the name itself reveals nothing beyond the EC ROM label. LCFC is the Lenovo-owned ODM behind NM-xxxx boards. EC firmware controls power-on, battery charging, fans and keyboard, so restoring it can revive boards that stay dead despite good rails. Confirm whether the EC code lives in a separate chip or the main SPI flash on this board, back up the existing contents, and check the size 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 @skclappybios. 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 →