Alongside, RedSn0w 0.9.12b2 the iPhone Dev Team has also released PwnageTool 5.1.1 untethered iOS 5.1.1 jailbreak update for iPhone, iPod Touch and iPad, for Mac users.
PwnageTool 5.1.1 is compatible for A4-devices like iPhone 4, 3GS, iPod Touch 4G, 3G and original iPad over iOS 5.1.1.
Download PwnageTool 5.1.1 for Mac
See also:
RedSn0w 0.9.12b2 Untethered iOS 5.1.1 Jailbreak
Download iOS 5.1.1