Thanks very much for the answer. But sadly i could'nt make it work I am a total newbie, therefore may I ask for further help? I opened the iso file with notepad++ and then with Hex extension. Then I looked for the byte sequence but couldn't find anything. I tried it for the European iso. What did i ...

Tournament Doubles Mode: Enable 2 Player Co-op Mode [Ralf] N731-QWC8-R9K88 D7E3-B9RK-63NZG VXD5-451M-TU8GZ Use the controller in port 1 to select both Co-op player characters (P1 & COM). The P1 character will be controlled with the controller in port 1 and the COM character will be controlled w...