has released his iPhone 3GS jailbreak named purplerain. Avaialable for download here
this has to be one of the easiest jailbreaks to use (if it works
1. Download purplera1n
. This download is Windows only. Also it doesn't work on Windows 7.
MMi user mutigers42 among others report that Windows 7 works.
It IS beta so make sure you have all your data before trying to use this tool. A Mac version should be following something in the near future.
This tool is just for jailbreak
and will NOT activate the phone or unlock it. Therefore, you should have an activated iPhone before following