Hi guys, Been out for a while, not that updated anymore. Anyway, I have an old phone - iPhone 5 running on iOS 7.1.2 and is jailbroken. I'm experiencing some issues for over a year now. The phone reboots upon receiving a phone call, it happens at least 3 out of 10 times and it sucks at times specially if the phone call is urgent and important. So the query is can I upgrade it to iOS 9 and jailbreak it afterwards? Or is it possible to re-do the iOS 7 jailbreak? Just don't know how. Thanks!