Last iPhone I had was the 4. Now, I have an iPhone 5S. Before, if something went wrong, we were able to restore to a previous jailbreakable build. It is my understanding that we can no longer do this. So, for instance if you're on 7.0.4 and Apple releases 7.1 and something happens when your JB'd on 704 - you are stuck and have to restore to 7.1. Is this correct?