RAR archive named simply EC, about 10 MB, listed as BIOS or firmware. The name gives no model or board number, so its contents must be checked before use. EC firmware runs the embedded controller, which handles power-on, charging, keyboard and fans, and on many laptops it sits in its own chip or inside the main BIOS flash. Identify the files inside and match them to your board before writing anything. Always read and back up the original chip first, and confirm the image size fits the flash.
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 @Satale_bios_esquemas_Laptop. 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 →