Unsupported Media Type (0x4f) I Have A Motorola U6 PEBL And Want To Get Games On It, Anyone Know How?

I have a Motorola U6 PEBL and want to get games on it, anyone know how? - unsupported media type (0x4f)

I have the Motorola Phone Tools and the cable you can transfer files, but each time a JAR file or JAD file and try to transfer the words "Request denied by phone (Unsupported media type (0x4F)). Can anyone help me with this? Thank you.