Yes. You don't have to worry about fuses or anything as sx os has fuse protection, plus there are no fuses burnt between 5.0.2 and 5.1.0. Just all depends if you don't want to be banned. If you already are banned chances are you wont be able to system update through settings anyways. I can't guarantee even if you go into original firmware and update that you won't be banned. So it's all up to you to take those risks. There are ways to update offline however, which is useful if you are banned. But using that could possibly get you banned from online as well if you aren't already. Hope this helped!