Please forgive my ignorance if I’m missing something. But before I update to this OS (4.2.2.351) I want to make sure this is the most recent. I have out of the box from AT&T an 8310 OS 4.2.2.170. I have seen a bunch of posting about 4.3 and 4.5 but don't see them anywhere (assuming they do not exist for an AT&T 8310). With that being said and I correct in assuming this is the most up to date OS for my 8310 with AT&T?

Thanks!