iPhone 4.0 Firmware Jailbreak: Already

Just hours after the official release of iPhone 4.0 Developer Preview firmware, it has been jailbroken already. The team behind this jailbreak goes under the name of MuscleNerd. They have people registered under the Apple’s Developer program and were able to grab a copy of 4.0 firmware as soon as it became available. A few hours later, the firmware was already jailbroken for the iPhone 3G and 2G model.

No word yet if it is going to be done with iPhone 3Gs model too. We will just have to wait and watch. Here is a YouTube video of the firmware running Cydia, a feature only jailbroken iPhones and iPod Touches can achieve.