THIS IS HOW IT IS DONE:
To change to multi region:
1.turn on and select dvd mode
2.open the tray
3.press the stop button on remote
4.enter1999 using the remote
5.a hidden menu will pop up
6.set the region code using the remote[set to all] 7.confirm it using enter
8.leave the menu using set up button on remote
9.close the tray