The hacker responsible for unlocking the original iPhone is at it again, with a new tool for the iPhone 3GS that gives rebel users the ability to run applications from sources other than those sanctioned by Apple.

George Hotz's new purplera1n application marks the latest in a string of "jailbreaking" tools designed to circumvent Apple's (NASDAQ: AAPL) efforts to lock the iPhone to a exclusive carriers and ensure that the phone only runs apps approved by Apple through its App Store.

In a recent blog post, Hotz said, "Yes, this is what you've all been waiting for. A jailbreak for the iPhone 3GS. And it's awesome. To get started right now, go to purplera1n.com and download it."

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