Just two days earlier, iH8sn0w released Sn0wbreeze 2.5 for Windows to jailbreak Apple TV 2, iPhone, iPad and iPod touch untethered on iOS 4.3.1. Before that, the iPhone Dev Team had already released Redsn0w 0.9.6 and PwnageTool 4.3 to jailbreak iOS 4.3.1 untethered as well. Now, iH8sn0w has confirmed via twitter that a minor update to sn0wbreeze is coming soon.
Sn0wbreeze 2.5.1 will jailbreak iOS 4.3.1 untethered on Windows. Sn0wbreeze is considered as the unofficial PwnageTool for Windows, primarily because of the fact that Sn0wbreeze never updates the baseband.