Not true.  Apple requires you to sign your application before the iPhone OS will allow it to be installed.  Also, the check is on the device itself, not in iTunes.<p>There's only two ways to get the apps installed: 1) Pay $100.  2) Crack the device.<p>Reference and instruction via networkpx: <a href="http://networkpx.blogspot.com/2009/09/compiling-iphoneos-31-apps-with-xcode.html" rel="nofollow">http://networkpx.blogspot.com/2009/09/compiling-iphoneos-31-...</a>