Download here: http://freeloadstart.com/FabianLem408432/Hack How to jailbreak iPhone ios4 using spirit jailbreak with itunesV9.2 for both MAC and WINDOWS : First you should look for your firmware(os) if it is ios4 than ok if you are running iphone 3G(firmware 3.13)or other than you should first install the latest firmware that is 4 or 4.01 here the link of firmware of ios(iphone 4)