Copy that .dmg file to a USB drive. That is the only clean copy of version 6.0.6133 that exists.

Apple typically does not provide direct "one-click" web download links for version 6.0.6133. Instead, there are three primary ways to obtain them:

The remains one of the most reliable driver bundles for running Microsoft’s operating system on Intel-based Macs. While Apple has moved on to ARM architecture, thousands of users continue to rely on this version for daily productivity, gaming, and creative work.