I have my 3GS jailbroken with jailbreakme.com so I haven't used limera1n yet but I found a guide on http://www.iclarified.com/ and it seems simple enough. So my questions are these, will I have any issues jailbreaking his iPhone 4 on my computer that has my itunes on it? The only reason why i'm asking because on the guide video I watched itunes popped up in DFU mode... just wanted to make sure there wouldn't be an issue with itunes trying to sync or something his phone on my computer. Another question would be is there anything I should know jailbreaking an iPhone 4 over a 3GS? Thanks for any help.