I would say that you should go back to the source where you got that code in the first place or do an internet search....don't forget to also look and see if your player is known as another brand....

region 2 hi, i have stupidly put a code in my dvd player to play multi region dvd's.
i have a phillips fw-d5 player and now it wont play region 2 dvd's, i'm in the uk and most of my dvd's are region 2. so if anybody out there knows the correct code to put i'd be really grateful, thanks