The iPhone Dev-Team has confirmed that they have successfully untethered the iOS 4.2.1 jailbreak. But only for those who have saved iOS 4.2 Beta3 hashes. A new teaser video showing the untethered the iOS 4.2.1 jailbreak in action will be arriving soon!
MuscleNerd recently tweeted, Got “backup plan” for untethered 4.2.1 JB working (video coming up). Uses mysterious 4.2b3 hashes Cydia kept for you.
(It’s a “backup plan” because comex is working on a more extensible one, but this method is also generalizable)
While we’re not sure about the status of that window, we do know that the untethered jailbreak solution will be released very soon. We’ll keep you updated as soon as more information comes-in. You can follow us on twitter or join our facebook fanpage to keep you updated on such iPhone, iPod Touch and iPad hacks.