Hitachi PDV312 region-free hack

Also works on: PDV313

1. Power on unit and flip up DVD drive cover

2. Press Setup on remote then left arrow to Preferences page

3. Press Display on remote, then 0283, then Display on remote again 4. Press 0 (for all regions)

5. Press Setup on remote and power off

6. When powered on next time the DVD will be multiregion

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