1. No CD in the tray
2. Press MENU, 1, 3, 5, 7
3. An info screen appears, check the region, it should be 0 (region free)
OR
Turn power on
Press "eject"
Press "display"
Press "1", "1", "1", "1" (four times 1)
Press "select"
press "0" (for region free), or "1", "2", "3", "4", "5", "6" (for the different regional codes)
You can check the change by following the usual sequence: "menu", "1", "3", "5", "and 7" (info screen)
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