Taken from another site in case you still need to unlock it.
The Pacific hack works for this one!
Multi-Region Hacks for Pacific DVD-1001
To change the current region setting on this player
1. Press the Standby button on your
remote control to place the unit into Standby
2. Press the Standby button on your remote control to turn on the unit
3. Press the Open/Close button on your remote control to open the drive tray
4. Press the Clear button on your remote control
5. Press the 1 button on your remote control
6. Press the 3 button on your remote control
7. Press the 6 button on your remote control
8. Press the 9 button on your remote control
9. Press the 0 button on your remote control
10. Press the Open/Close button on your remote control to close the drive tray
11. Press the Standby button on your remote control to place the unit into Standby
12. Press the Standby button on your remote control to turn on the unit
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