WinPwn 126.96.36.199 was released today with support for firmware version 2.0.1 for the iPhone. Operation is the same as previous versions of WinPwn -- this release just includes support for the newest firmware version and Installer 4. If you need help operating WinPwn ask away.
WinPwn.org is having technical difficulties at the moment so you can grab it from the following links:
MMi Member Download
Also be sure to snag the correct 2.0.1 firmware for your device from from our downloads section.