so i am making an app for my iphone using xcode,and have made in it some toggle-able jit futures,i build the projuct and sign it using ldid,chmod 755,it works but everytime i toggle the jit futures it crashes when i try to use them,i understand that apple doesn't allow jit on it's devices but all sources say it can work on a jailbroken device,so how do i make the jit on my app usable