1. press the open/close button to open the tray;
2. press the setup button to go to the setup screen;
3. press the right-arrow button until you reach the preferences section of the setup screen;
4. press the 1 3 8 9 keys in that order; a region picker will appear;
5. press the up/down arrow keys to pick a region;
6. press the play button to dismiss the region picker.
I've used this hack about five times to switch between regions 0, 1, and 2. So far it works great
Now the region code menu appears. Change it to other values by pressing "up" and "down" keys on the remote. Select 0 for "all-region"
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