title: Why isn't my iPhone OS supported by XCode? It's listed right in the error message
body: <p>The version of iOS on “iPhone” does not match any of the versions of iOS supported for development with this installation of the iOS SDK. Please restore the device to a version of the OS listed below, or update to the latest version of the iOS SDK; which is available here.</p>
  
  <pre><code>OS Installed on iPhone
  4.2.1 (8C148)
  
  Xcode Supported iOS Versions
  Latest
  4.2.1 (8C148)
  4.1
  4.0
  4.0.2
  4.0.1
  3.2
  3.2.2
  3.2.1
  3.1
  3.1.3
  3.1.2
  3.1.1
  3.0
  3.0.1
  </code></pre>