Embedded controller firmware for Compal board LA-J891P, supplied as a small RAR archive of about 63 KB. The EC handles power sequencing, the keyboard, battery and charging, and fan control, so a corrupt EC image can cause no-power or charging faults. The name gives no laptop model or version. Write it to the EC or its flash chip with a suitable programmer, read and save the original first, and make sure the board matches LA-J891P.
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 @schematiclaptopramkushwaha. 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 →