Technology Slice Blog

iOS 4.2.1 Jailbreak - Those who have jailbroken iPhone 4.2 (iPhone jb guide here) or iPad 4.2 (iPad jb guide here) know by now that it's a tethered jailbreak. Meaning, you must plug your device in every time you reboot it for any reason. The good news is that the Dev-Team has finally managed to run an untethered jailbreak on iOS 4.2.1 for those with their 4.2b3 hashes saved. iOS 4.2.1 Jailbreak