First you must make an cdi-image of the game, right? (what settings are you using?) I set "raw read/write" and "ignore read errors" in the "advanced" folder. (-> is this ok?). Then I opened it with HEdit and I replaced the HEX-Code above. Is it right that you must check the box "Match case", when you want to replace the HEX-Code?
Because before cheking this box, i head problems with the changed image in DiscJuggler and also in Blind Write with Daemon Tools (Blind write says he founds 1 ECD(or ECC?)-Error). After checking this box i have no probs. Have someone same problems?!?
The game boots now on PAL-Dreamcast with RGB-Cable.
Thanks for helping megalexxx and mostly for the Hex-Code!
One question to this: will the game boot now on a ntsc-dreamcast or a pal-dreamcast without RGB-Cable?!?!