Help?

[xTSFx]

How do I reset an Alltel diamond? I have tried

1. Power off phone
2. Hold down enter button (center round button)
3. While holding down enter button, press and hold down vol button
4. Whild holding down enter button and down vol button, press and hold power button
5. Wait a few seconds, screen should come up grey saying to press vol down button again to do a restore. Release buttons and press vol down button
6. Screen comes back saying restore is done and press vol up button to complete