If the unofficial version of PwnageTool didn’t work for you, alternatively, you can now give PwnageTool bundles a go for jailbreaking iOS 4.3 Beta on iPhone 4. However this kind of jailbreak is strictly limited to iOS developers only, and will require you to have a Mac, and you must also be enrolled in either iPhone...

An iOS developer called Sebastien Peek was able to spot the first bug on the newly released iOS 4.3 beta 1, you can notice clearly on the below embedded video the problem with scrolling when activating Multitasking Gesture feature....