Jailbreak Ios 4 2 1 With Redsn0W 0 9 6B4
A major negative about going for Redsn0w 0.9.6b4 is that it is tethered jailbreak which means you will need to rejailbreak it everytime the device is rebooted (just like Blackra1n). The tethered jailbreak condition in Redsn0w 0.9.6b4 however only applies to the new devices like: iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC Model), iPod touch 3G and the iPod touch 4G. Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (Non-MC Model) can be jailbroken-untethered right now using this latest version of Redsn0w....