> ...the installer was cobbled to bypass the version checks.
Do you really mean "cobbled," or do you mean something more like subverted?
Or do you mean that the d/l may have come with its own "cobbled" installer?
Aside: What on Earth possesses people to d/l free Apple software from a 3rd party Website?
It's not like Software Update is a secret, popping up by default almost the second you boot a new Mac, as it does.