IPhone Dev Team firmware images to user-defined specifications. These firmware images often contain the APT interface Cydia as well as additional APT packages. Although PwnageTool is only for Mac OS X, a Microsoft Windows version called WinPwn was developed but is now retired. PwnageTool is freeware but not open source, and as mentioned inside the application, is copyrighted by the iPhone Dev Team. IPhone Dev Team The iPhone Dev Team was a group of engineers in the iOS (formerly "iPhone OS") community which had developed several tools to enable use of applications not authorized by Apple Inc on the iPhone, iPod Touch and
IPhone 3GS more favorable reviews mainly because it comes pre-installed with iOS 4. Jason Snell of Macworld praised the iPhone 3GS, saying that "the device's internal changes shines in the iOS 4 update, making the iPhone 3GS a worthwhile upgrade compared to its predecessor although a little too late compared to the iPhone 4." TIPB stated that "aside from hardware specific features like FaceTime, Retina Display, and gyroscope support, the bottom line is iPhone 3GS users are getting the same software that makes the iPhone 4 great." Shortly after the release of the iPhone 3GS, some users reported overheating of the device