title: Unusable UDID in new ios7 (with FFFFFFFF prefix)
body: <p>I need to register new device because I need mobileprovision. I can't use mobileprovision because <code>UDID</code> has <code>FFFFFFFF</code> on start. I think it is wrong <code>UDID</code>.</p>
  
  <p>Any idea how to fix it?</p>