My dad has a 9530 that I have spent numerous time unlocking and changing settings on it to make it work well on ATT. You know had to load service books, and change settings to make the internet work.
He, my dad, is not real tech saavy, but dying to have a good OS on his 9530 Storm. I would be open to advice. . .
He wants it to be more dependable than now and is currently running a 4.7 OS