Wait is over now. Chronic Dev Team has finally released the Greenpois0n RC5 update to support the untethered jailbreak on iOS 4.2.1.
According to Joshua Hill aka @p0sixninja over Twitter, the current update is for Mac users only but Windows based version of Greenpois0n RC5 will be released soon.
p0sixninja: Windows version soon after (macosx version is beta) …more packaging, less talking
Download: [See the Update below for latest version]
- Download Greenpoison RC5 for Mac OS X [Direct link 2] [Official Site is Here]
- Download Greenpoison RC5-2 for Mac OS X [Mirrors: Link 1, Link 2, Link 3] (Greenpois0n RC5-2 is an updated version with some bug fixes)
- Download Greenpois0n rc5 for Windows (coming soon)
The complete step by step guide to jailbreak iOS 4.2.1 untethered on iPhone 4, iPhone 3GS, iPhone 3G, iPad and iPod Touch is coming soon here.
Greenpois0n RC 6 is now available for both Windows and Mac OS. You can download these versions from our this post.