I have iPhone 5 64gb A1429 and somehow I was able to update to 8.4.1 recently from 7.0. I don't know exactly what I did for it to happen. I was trying to update through ipsw file to just 7.1 and the phone itself later notified me that 8.4.1 was available. So I updated to that. I'm avoiding 10.2 I am now trying for 9.3.5 but not having the same luck as before. Any suggestions? I got this phone used it's not jailbroken.