I have two rings, one of them is a Stealth bomber, I thought my Stealth Bomber died because I kept trying to write the unlock to it and it said it succeeded but then it said "Invalid credentials" or simply nothing when I tested. Apparently this happens if you already have a ring registered with a name (001 for example) and then you try to register the Stealth Bomber ring under the name (001) as well. As a result the Stealth Bomber ring actually doesn't work with the new Max name (description does get updated) but the old ring still works on it.
It would be nice if it would display a clear message that you're about to overwrite an unlock ring with the same name (although it apparently fails to correctly overwrite it?)
-Max