Helo mate try these>>>
gdvd 100.
setup->menu->step->prev->next gives access to a secret menu. region bypass can be accessed.do this with no dvd/cd in the tray
or this one>>>>>
gdvd107r
Goodmans 107R open dvd draw then type in on your remote 9817 then enter the secret menue will come up you can change region by presing enter again to the region number you want region 9 is multe region then press play. You can also diable maco from this screen
hope it helps,found these here>>http://www.dvdrhelp.com/dvdhacks.