I have iPhone 4 4.1 and I wanted to jailbreak it. I have used greenpois0n for jailbreak. But now there is only blank icon of LOADER. I can't open in and i can't delete it! And also I don't have jailbreak. What should I do? I have read somewhere that I should restore my iPhone. But I don't know how to restore without upgrading it to 4.3.2.