Philips DVP-520 region-free hack

Navigate the OS menus to the Preferences page (Right x 3)

Navigate down to the Default setting (Down x 5)

Press the right button to highlight the Reset option

Press 1 3 5 5 6 6

Region setting dialog should now appear showing the current region

Press Up/Down to select desired region (region 0 = region free)

Press Ok, and the changes should now be permanent.