A new process for jailbreaking and allowing the installation of non-sanctioned third-party applications to the iPhone has debuted. It’s called AppSnapp, and is unique in two respects: it automates the process on iPhones running software/firmware 1.1.1 (previous methods were multi-step), and it can be completed purely using the iPhone; no interaction with a Mac or Windows computer (as with previous methods) is required. The process will jailbreak the iPhone or iPod Touch then push Installer.app to the device, which contains a catalog of native applications that can be installed directly over a WiFi or EDGE connection (see our Applications page for more instruction on Installer.app).

One-step method for adding third-party apps to iPhone 1.1.1, iPod Touch debuts - iPhone Atlas