I'm trying to upgrade my iPhone 4 to 4.1 but itunes keeps giving me error 3014 when it's on the verifying stage. I found that it looks like it has something to do with the host files, but I'm confused on what it should be because it used to be one way on 3.1.3 and now it seems like that has changed. I've been jailbroken on 4.0.1. Any help would be great!