Grundig GDP3564 region-free hack

1. Press the open button on remote control to open tray

2. Press the 2 button on remote control

3. Press the 8 button on remote control

4. Press the 1 button on remote control

5. Press the 2 button on remote control

6. Use arrow keys on remote to highlight current region number

7. Press OK on remote to select region 1 for region 1, then 2 for region 2 and so on - 0 or 9 for multi region

8. Press the 'i' button on remote control

9. Player should now be multi region