Everything must be done with the remote control :
Power on the player
Open tray
Enter the following code : 7890
A secret setup menu appears indicating the current zone and the version of firmware
Press ENTER on remote control to select appropriate zone (Zone 9 for multizone)
Power off player; the settings will be saved
If you are unsuccesfull with the above code then it may be worth trying one of the resources below.
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