title: Howto develope and distribute for OS3.0 with iPhone running iOS4
body: <p>i'm a little bit confused about the current iOS4 update.
  I developed a little App, und wanted to do some improvment.
  Today i updated my iPhone to iOS4.</p>
  
  <p>When i use Xcode 3.2 i couldn't use my iPhone for testing, its not supported.</p>
  
  <p>When i use Xcode 3.2.3 i can use my iPhone, but no testing with OS3.0.</p>
  
  <p>What is the best way to make an App that is Running on os3 and iOS4?</p>
  
  <p>Thanks in advance</p>
  
  <p>Max</p>