Always back up your original KONAMI/Pro Evolution Soccer 2017 directory in your Documents folder before overwriting files .

If your goal is to update PES 2017 on PC safely, gaming communities generally rely on a few well-known, dedicated modding teams rather than random isolated fix files:

Another active alternative that features heavy visual overhauls and seasonal player transfers . 📋 General Best Practices for Modding

If you tell me what specific , team , or visual update you are trying to acquire, I can help direct you to safer, well-known community resources.