Embedded controller firmware for the 330s-15AST laptop, which uses the 330s_ast_mb_v10 motherboard, zipped to 49.2 KB. The EC handles power sequencing, battery charging, keyboard and fan control, so a corrupted EC image can cause a no-power or no-charge fault. Flash it to the separate EC flash chip, or the EC's internal memory, with a suitable programmer. Back up the existing contents before writing, and confirm the motherboard marking matches, because EC code is specific to the board design.
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 @vinafix_bios. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →