It sounds like that program did not work correctly with your device. That happens. Here are two things you can try.
Booting to Recovery When Stuck at Boot up
1. While the phone is stuck booting up, press and hold both the "Power" and "Volume Down" buttons, together, for about 15 seconds or until the phone restarts.
2. Immediately as the phone restarts, and before it is actually booted up at all, press and hold the "Home Button" and "Power" and "Volume Up" buttons, together, for about 10 seconds or, until the "Recovery" screen appears.
Booting to Download Mode When Stuck at Boot up
1. While the phone is stuck booting up, press and hold the "Power" and "Volume Down" buttons, together, for about 15 seconds or until the phone restarts.
2. Immediately as the phone restarts, and before it is actually booted up at all, press and hold the "Home Button" and "Power" and "Volume Down" buttons, together, for about 10 seconds or, until the "Download Mode" screen appears.
3. Use the "On-screen prompts" or press the "Volume Up" button to activate the "Download Mode".