Open disc tray.
Press 'Setup' on the remote.
Then press 'Next, Prev, Next, Prev.'
Enter region code setup:
Ver 255 = Region free.
Ver 1 = Region 1.
Ver 2 = Region 2.
Press left (<) or right (>) key.
If you are unsuccesfull with the above code then it may be worth trying one of the resources below.