Apple constantly releases new firmware updates for it’s iPhone to solve many of the bugs, problems and to add new features. But the main objective is to fight against the unlocking/jail-breaking of the iPhone.But the hackers/developers always find a way to jail-break/unlock the iPhone. This is the case with the new Apple iPhone 3.1 OS update too. Very soon after the release of the firmware, the OS has been jail-broken.
The jail-break hasn’t been complete and works only through Mac computers. Windows version is not out yet.Also the jail-break can be done only on the iPhone 2G and iPhone 3G. The iPhone 3GS isnt supported yet although you can expect it very soon. We don’t recommend you to upgrade as 3.1 has brought some bugs than bug fixes according to many iPhone users.Some users are complaining of a sharp drop in battery life even in iPods running 3.1