GM release candidate of iOS 4 scrapped the weaknesses which makes jailbreaking an iPhone much easier. The Pwnage tool is the one which allows to jailbreak iPhone 3Gs with iOS 4 GM candidate. The iOS 4 works on with any iPhone or iPad touch.

The developer msft.guy whose qualification includes the recently released binary which enabled blacksnow unlock port for iPhone 3Gs on iOS4 Beta4. The ever reliable iphone Dev Team promises a full jailbreak or unlock suite later of this month. The iOS 4 now works with any iPhone or iPod touch which is an already proven companion, the trick is that now there is no need to register with Apple before trying.

The jailbreaking preserves the signals and system so it is possible to unlock the iPhone right after making it free from Apple’s restraints. To unlock the iPhone 3G with iOS 4 there is no need to mention the process just can make the bump and hit the read the file.