Shortly after the announcement at WWDC, Apple leaked iOS 4 GM to Developers. We had soon discovered that redsn0w 0.9.5 had the ability to jailbreak the newest release candidate, however, there were some issues with this process and not all features were fully functional.
The Dev-Team has released redsn0w 0.9.5b which has been updated to be more compatible with iOS 4 GM. Multitasking and Wallpapers are now functional on the 2G with this release, which is two of the main features many of us are looking forward to in iOS4, although we were afraid we might not get these features for older models.
If your going to do this, you will require a Mac and iTunes 9.2 to use it. Since this redsn0w beta is intended only for those with legitimate developer program access, this shouldn't be a problem. However many of you are impatient and are installing this now, so once again, you have been warned! Use at your own risk!
Download Redsn0w 0.9.5b