Our beloved iPhone Dev Team yesterday released updated versions of QuickPwn for Microsoft Windows (now with improved Windows 64bit handling) and PwnageTool for MacOS X (fixes the permission issue, mentioned here). If you have PwnageTool installed yet, it should bravely auto-update.
We had no time yet to test neither the Windows version nor the Mac version. Firmware 2.0.2 is reported to be only a series of bugfixes. People report, their devices run a little smoother. If you don’t encounter problems running your current iPhone / iPod Touch firmware, we would not recommend to update right now. It is rumored Apple will the release stable firmware 2.1 in september.