Blacksn0w has now released its new tool which is capable of Unlocking iPhone 3GS running on iPhone OS 4.0 beta 4, 05.11.07 baseband. You can try out this tool by yourself if you are a professional, but we recommend that you wait for a while until Apple releases their next generation iPhone along with iPhone OS 4.0 in WWDC.

Unlock iPhone 3GS on OS 4.0 Beta 4 Using Blacksn0w

You can learn more about this tool in the video below:

[via RedmondPie]