DevTeam worked hard for the last several hours and released jailbreak tool for iOS 4.2.1. It is redsn0w 0.9.6 b4.
As usual we remind all ultrasn0w unlockers please stay away from this official firmware. Wait for the ability to create custom 4.2.1 IPSWs that don’t update your baseband!
New redsn0w 0.9.6 b4 uses limera1n exploit and will successfully jailbreak all devices. The only problem is that it is a tethered jailbreak, which means you will have to plug it to a computer and rerun redsn0w on every reboot. This so called tethered or semi-tethered jailbreak. This condition applies to iPhone 3GS (new bootrom), , iPad, iPod touch 2G (MC model), iPod touch 3G and iPod touch 4G. Hackers are working hard to create untethered jailbreak for these devices. To use future untethered jailbreak you need to save SHSH keys for iOS 4.1 using utility or directly in Cydia.
Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (non-MC model) can be jailbroken-untethered right now using this latest version of RedSn0w.
The iPhone Dev-Team recently has released a new version of RedSn0w for Mac and Windows. RedSn0w uses the Limera1n exploit to support more devices and adds the ability to restore custom firmware ipsws. The crew promises that now RedSn0w will work with the iPhone 3G, 3GS, 4, iPad, iPod 2G, 3G, and 4G (Not iPod 2G-MC yet).
A new group of hackers claim they found a new exploit for the iPhone 3GS and iPod Touch with the new BootRom. This means that jailbreak for iPhone 3GS (late models) and iPod Touch 2G (MC) and iPod Touch 3G will be available.
We just found an amazing Exploit in the Boot-System of the 3GS with the new Bootrom! This Exploit works on ALL iPhone and iPod Touches!
The tool will be called Gull1hack. The operation is very simple and the code is sent when the device is in recovery mode, just like Blackra1n and Redsn0w do. This jailbreak tool has been neither confirmed by Geohot nor from the DevTeam. Many users think this is fake. We’ll see.
Now everyone will know that the DevTeam and GeoHot are no longer in good terms and in fact shortly after the release of Redsn0w 0.8, the tool to run the jailbreak of Firmawre 3.0, there were many discussions on Twitter between GeoHot and copumpkin, one of the DevTeam members.
GeoHot complained that redsn0w uses the same “hole” and the same exploit to run the iPhone 3GS Jailbreak, copumpkin said that the flaw was the same but the exploit was completely different and created entirely by them. Not trusting, GeoHot asked repeatedly Hash codes (the identity) for the files needed to run the exploit and said that it had not been a good idea to release two programs that use the same “hole” (stealing?).
GeoHot also said, that redsn0w has problems (which is true, some users have reported problems) and so he plans to release a new better version of Purplera1n. It will probably will also unlock the iPhone.
