I installed afc2add from Cydia, I was told it was needed for programs like iFunBox and so on. Once I installed it from Cydia, I hit re-spring and the phone restarted but my 5s just sits at the white splash screen with the black Apple. I can hold both buttons in to restart the 5s but it just sits at that white screen. I'm JB on 8.1 btw. How do I fix this?