If you are looking for the specific "known-good" 6.71 installer, it is typically hosted on enthusiast forums: Atari Age Forums
To use the official v6.71 software on modern Windows, the user must manually disable Driver Signature Enforcement via the Advanced Startup options. This is generally considered an insecure practice. minipro 671 download fixed
: If your device is unrecognized, you may need to use the "Reflash firmware" option under the Tools menu within the v6.71 interface. If you are looking for the specific "known-good" 6
To avoid needing another "fixed" download in six months: minipro 671 download fixed