How do I unlock my Sony DVP - NS330 player, bought
Sony DVP-NS300, Sony DVP-NS305, Sony DVP-NS400D, Sony DVP-NS700, Sony DVP-S330, Sony DVP-S335, Sony DVP-S360, Sony DVP-S336, Sony DVP-S525D, Sony DVP-S530D, Sony DVP-S535D, Sony DVP-S536D, Sony DVP-S725D, Sony DVP-S735D
Turn on the unit with the remote controller, Wait until "no disc" appears in the unit's display. Press the keys: PAUSE, 3, 1, 4, 1, 5, 9. And "CODE" will appear in the display. Press the number key that corresponds to the disc zone you want to play within the next 5 seconds:0: All regions / 1: Region#1 / 2: R#2/... and so on. Then, within 5 seconds, press: PAUSE, POWER... and voilà. If you don't have good results, disconnect the equipment and repeat.
Put your player in standby mode and then enter: [ [ENTER] Default Default region code  [ENTER] or [UP] [ENTER] Region 1  [ENTER] or [RIGHT] [ENTER] Region 2  [ENTER] or [DOWN] [ENTER] Region 3  [ENTER] or [LEFT] [ENTER] Region 4  [ENTER] or [TITLE] [ENTER] Region 5  [ENTER] or [DVDMENU] [ENTER] Region 6  [ENTER] or [RETURN] [ENTER] Region 7  [ENTER] or [DISPLAY] [ENTER] Region 8
Put player into standby modes by pressing power button on remote control. Then press Title button. Press Clear button. Press Power button.
Yours is not listed but these may be worth a go.
or try http://www.haldigital.com/hp/dvd.htm