iphone firmware downgrade
<p>I'm trying to downgrade my firmware to 3.0 so that I can test compatibility of my app.  I tried doing an Option+Restore in itunes and selected iPhone1,2_3.0_7A341_Restore.ipsw I found on the web, but it errors out about half way through.</p>

<p>When I tried downgrading from xcode organizer I got an "Error: Updating baseband: The baseband cannot be rolled back"</p>

<p>Is there anyway to roll back the firmware ?</p>
