August 12th, 2011 | 
Author: Green Poison Jailbreak for iPhone 4 HELP NEEDED!?
I have a iPhone 4. we did a total land a buttons thing as well as it installed. But a phone wouldnt restart. All we have upon my screen is a USB wire indicating up to a iTunes icon. we have attempted land down a home as well as energy button as well as it goes back to a same thing. Some a single help!
Best answer:
Answer by Expert@Guitar-Hero!
Sorry to contend though we substantially bricked it. The usually approach to repair it is to revive it upon itunes. This happened to me a whilst back. Good luck!
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the whole jail breaking process is a bit complex i would def check out the dev teams blog.