Yes, you read the title correct the first working jailbreak tool Redsn0w 0.9.5 to jailbreak iPhone OS 4.0 Beta 1 has been released by iPhone Dev team. However Redsn0w 0.9.5 is targeted at developers of jailbroken apps. It uses the same pwnage2 DFU-mode exploit that we’ve been using since the 2.x days.
After iPhone OS 4.0 announcement and number of iPhone hackers iPhone Dev Team, Geohotz, Comex, ih8sn0w etc has come up with proof video of successfully jailbreaking iPhone OS 4.0 but none of them provided ETA. There were number of guess that this jailbreak tool won’t come out until iPhone OS 4.0 is released.
But it looks iPhone Dev team has something different in their mind. We feel that, they might have one more exploit which can be used if Apple fixes this pwnage2 DFU-mode exploit in final iPhone OS 4.0 release. Till that time here is your chance to jailbreak iPhone 3G
4.0 with Redsn0w 0.9.5.
By no means users should attempt to install iPhone OS 4.0 considering Redsn0w 0.9.5 jailbreak tool is out. Since you’ll need a properly-registered developer UDID with Apple to get past the activation screen. For similar reasons, there is no Windows version of this beta redsn0w.
Redsn0w 0.9.5 is supports
1. iPhone 3G only (for now)
2. Mac OSX only (for now)
3. iPhone 4.0 beta 1 firmware only (for now)
Download Redsn0w 0.9.5 for Mac OS X.