Two days back apple released the new and update iOS 4.3.3 to Fix Location Data Issues. Now iPhone Dev Team has released Redsn0w 0.9.6 RC15 and PwnageTool 4.3.3 for untethered iOS 4.3.3 jailbreak, so we can enjoy the untethered iOS 4.3.3 jailbreak on iPhone, iPad and iPod Touch. By jailbreaking your device, you gain the ability to install apps that aren’t available from the iTunes App Store, including software which changes the look, feel, and deep system behavior of your iOS device.
NOTE: ultrasn0w unlockers must stay away from redsn0w! Use only a custom IPSW to update to 4.3.3, to avoid updating your baseband.