I bought a portable dvd pd9012 in EU, i want to change the code to use it in mexico

Sure I can Help I just unlocked mine today !!! The procedure is very simple.You don't even need to go to the menu pref or whatever.It's actually as follow :- turn on your Portable DVD player without any disc to obtain the bluescreen- Then with the arrow keys in front and at the bottom of the mainscreen press the sequence as follow : "UP', "Down","Up", "Down", "Up", "Up","Down"- Then you will have a screen telling the version that you have and at the bottom it says "region 1" or something else - Just use the arrows again to change it until you got "Region0" (this is region free) and then press "Ok" (the play button in the middle ofarrows), that's it !!!Inthat process, remember that you just have to use the arrows in the front of thescreen at the bottom and at the end the button "OK". Nothing else.Good luck !!!