CyprusGPSnightmare

Hello everyone. My name is Adrian and I am the owner of an imported (into Cyprus) Toyota Rush (aka Daihatsu Bego/Terios) MY06. I think the car itself is great, but have a problem in that the radio/cd/dvd unit (which is part of a GPS display as well) does not seem to like being in Cyprus as nothing works except for a screen display in Japanese which says something along the lines of "insert programme disk" (which I don't have). Can anyone help?