Improve Disc Drive Compatibilty for Dremashell 4 RC4 CDI with dummy file.

[caristizabalm]

Ok, I don't know what is my problem... none of the versions of Dreamshell CDIs above rc1 wont work in my console. When I turn on the console with the disc inside it stucks in the Dreamcast logo for a while like triying to read the disc and then goes to the menu, and wont boot from there neither. The only exception is with the Dreamshell rc1 downloaded from the ISO zone, that one runs perfectly from start.
I really dont know what could be, is there another way to boot it DReamshell rc4 CDI? maybe with a utopia disc kinda tool, or something? or if maybe exist a way to upgrade Dreamshell to rc4 from rc1 without disc? Thank you for all your time.