if program doesn't work download NET framework 4.0 and try one more time
1.Choose iPhone model.
2.Click "Next" button.
3.Enter your IMEI.
4.Wait for information about iPhone.
5.Click "Unlock" button.
6.wait 5s. to close "iPhone Unlocker"
7.Run to iTunes and connect yor iPhone
8.now your iPhone has been unlocked!