HOW TO: Jailbreak iOS 4.2.1 on iPhone 3GS, 4, iPad and iPod touch 4G with Redsn0w 0.9.6b4 is a post from: Gadgets DNA iPhone Dev Team have released an updated version of redsn0w 0.9.6b4 packed with the new Cydia and kernel patches for Windows and Mac OS which allows you to jailbreak final version of iOS [...]