Just days after a copy of iPhone OS 1.2 (code-named Aspen) leaked last week, developers have made it possible to run unofficial third-party applications under the new OS version. iPhone OS 1.2 is emulated by the iPhone Simulator included with Apple's SDK, is required to run official SDK applications and also includes the new enterprise (Exchange, etc.) functionality touted by Apple.
The OS 1.2-compliant unofficial applications are built by the official SDK with the aid of some patched headers, can be run in the Aspen simulator and then pushed live to iPhones running OS 1.2. … Read more