restore jailbreak iphone

You can try putting the iPhone into DFU mode and see if that will let you restore and remove the jailbreak:

http://osxdaily.com/2010/06/24/iphone-dfu-mode-explained-and-how-to-enter-dfu-mo de-on-your-iphone/

Some jailbreaks cannot be removed and in some cases will permanently disable your iPhone. If that happens to you, then you will have to buy a new iPhone; Apple will provide no support, warranty or out-of-warranty, for a jailbroken iPhone.

You're on your own from here. We can provide no further help with a jailbroken iPhone in these forums.

Good luck.

If you go on other forums such as idownloadblog.com or yahoo answers you will get much more answers.