Before you go throwing around the term "bricked", first Youtube/Google how to do a correct DFU Restore. If that does not work, then post again here. I will tell you this though, if your iPhone is truly bricked, then you can probably just go get a replacement for it at your local Apple store, just don't tell them you had JB. My first iPhone4 bricked out of the blue on me due to a hardware battery failure, but I'm thinking that if you're phone is truly bricked, then they won't be able to tell how it got there, so they'll be forced to replace it.