Is it possible to make Samsung HT-C420 home cinema region zone free?

1. Remove disc from tray.
2. Switch off player and unplug from mains.
3. Wait 30 seconds, then reconnect mains.
4. Turn on player with remote. Wait for player to finish loading and display 'no disc'.
5. Press enter on remote. (There will be no on-screen response.)
6. Press 8, 4, 2, 6, 9 on the remote. (There will be no on-screen response.)
7. Press enter on the remote. Player will automatically shut off.
8. Turn player on.
9. Turn off.
10. Turn player on then off again.
11. Player is now region-free.