Today, just like a big jailbreak party, everything about A4 untethered jailbreak has released, just enjoy them,and the iPhone Dev-Team has updated PwnageTool with support for the iOS 5.0.1 untethered jailbreak. PwnageTool lets you easily create a custom ipsw for upgrading to iOS 5.0.1. Depending on your device you can also configure the ipsw with boot logos and Cydia packages.
You can download the new version of PwnageTool from:
PwnageTool 5.0.1 (Mac): PwnageTool_5.0.1.dmg