UTM no longer works on iOS 14 without a jailbreak. It used shenanigans[0] to cause the process to be entitled to JIT, and the shenanigans no longer work.
0: https://github.com/utmapp/UTM/blob/1feb721a9474255bd112f9e42...
0: https://github.com/utmapp/UTM/blob/1feb721a9474255bd112f9e42...
This GitHub issue has more info: