iPhone hackers, get ready! You can jailbreak iPhone 4.0 beta 1 now, thanks to the redsn0w 0.9.5 software created by the iPhone Dev Team. For those that don't know what this is, “jailbreak” or “jailbreaking” iPhone 4.0 firmware basically allows you to download third party apps and fully customize your iPhone. This jailbreak will only work for iPhone 3G users on a Mac. It's still in beta, so it's very buggy. If you plan to jailbreak, know that your unlock will be compromised since Apple updated the baseband in the iPhone 4.0 beta firmware.