I have an iPhone 6s updated to 10.2.1. I used Yalu to jailbreak my device on 10.1. I decided I didn't want to keep the jailbreak and tried to get rid of it. I restored a backup from before jailbreaking and then updated my phone. It works perfectly fine now, and there's no cydia or anything on it. I tried to play Fire Emblem Heroes and it crashes every time I start it. I've reinstalled it 3 times and it still hasn't worked. Everything I've read says this is the jailbreak detection kicking me out of the game. So I'm stuck with a fully updated phone, no jailbreak apps like cydia, and an app that's crashing because it detects a jailbreak. What can I do to fix the problem? Restore another backup maybe? I'm at school right now, so I'll test everything when I'm home. Thanks everybody!