Without the "UPD" component, you are downloading a historical artifact, not a working tool.
Just because a proxy is "free" and "updated" does not mean it is safe. You are routing your traffic through a stranger's server. Here is your safety checklist. Reflect4 Proxy List UPD Free
Note: This article is for educational purposes regarding network technologies and terminology. The distribution or use of unverified proxy lists may violate terms of service or applicable laws. Without the "UPD" component, you are downloading a