Page 1 of GDVD66 by Goodmans can anyone help

I have GDVD66 portable dvd player.I would like the code for region 1 and poss back to 2 or all the codes. the machine comes with a remote.I have looked everywhere for the region codes but no luck as yet.
Hopefully someone can help.when u put in the dvd (region1) it comes up on the screen as the wrong region .so i think its crackable :)
many thanks for help in this matter appreciated.hope some can work it out.