To quote myself, "I used the same method that is known to work with my mods and everything looks fine after a quick test, but it has no warranty". In any case, I removed that attachment from the first post long ago, because 1. interest on it was low, 2. I didn't want to make it look like an official update from Owyn.
25302 is actually the most common build in the 2.2.1 series, and remains in use by enthusiasts that appreciate the clean interface and low resource usage. In all seriousness, however, as much as the 3.x versions have ruined and bloated the client, I don't think using an 11-year-old program with known issues and security vulnerabilities is really a solution. That's partly why I made Clean uTorrent... no Serenity mod or cheating features for that one, though.