As expected, iPhone Dev Team have released redsn0w 0.9.6 beta 4 to jailbreak iOS 4.2.1 on iPad, iPhone and iPod Touch. Redsn0w 0.9.6 B4 is based on GeoHot’s limera1n exploit and can jailbreak 4.2.1 iOS on all idevices. We’ll be posting a step-by-step guide soon. Here is official word from iPhone Dev Team on release of redsn0w 0.9.6 Beta 4:
redsn0w version 0.9.6b4 is now available for your 4.2.1 jailbreaking pleasure. Please read all the above to understand what this jailbreak currently entails.
and here are download links:
Download Redsn0w 0.9.6 Beta 4
- Windows: redsn0w_win_0.9.6b4.zip
- Mac OS X: redsn0w_mac_0.9.6b4.zip
After downloading, you can follow our tutorial to jailbreak iOS 4.2.1 with Redsn0w.
Note: Download links have been updated.