Small ZIP archive of 52.4 KB holding an embedded controller firmware file, named only EC.bin, linked to Wistron board 17809-1M. The name gives no model, version or status, so verify the contents before use. EC firmware handles power sequencing, charging, fan control and keyboard, and a corrupt image can cause no power or battery faults. Wistron uses five-digit project numbers with suffixes like this. Read and keep the original EC contents before reprogramming and confirm the board number on the PCB matches.
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 @efibios. 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 →