Sadly this does not work like that, they just probably fixed clientsided cheats ways and that's it. So no matter how you log with which lib (that would be a mess to log with an old one anyway) if you ever get to connect, you'll still rely on server not applying the said cheats.
A lib won't undo security. Unless you did find a security that was made into the game itself, clientside-wise, other than that, nope. And if you did, it would be better to just null the security added than going backwards.
Cause even the game itself would've a struggle to load itself properly if even at all. For fact, you already can't log-in due to a ver check or just domain/ip change uhm