Can I update my jailbroken iPhone to iOS7 without using iTunes?

I have a jailbroken iPhone 4 running 5.1.1. I can't restore this phone in iTunes as it throws up an error half way through (I have tried the shift-click method). My question is; is there a way to update it to iOS7, jailbroken or not, i don't mind, without using iTunes? The pwnage tool only works up to iOS5 and evasi0n requires the phone to be running iOS7 already. Any help would be greatly welcomed.

If you have SHSH blobs you can try to use iFaith to restore to an earlier version of iOS. That's a really complex way, but it's the only thing I can think of

No, you can't.

No, if you try your phone is wonna stay usless and you would have to put it in DFU