Is it possible to download the whole XCode Project (with project-files) so that i can run scumm inside the iPhone-Simulator or deploy it by myself to the iPhone ? I dont have an unlocked iPhone.
You can't run ScummVM on non-unlocked iPhones afaik, as screen access is done using direct CoreSurface access, which doesn't work on the official SDK as far as I know.
As for the xcode project, it's at:
/scummvm/trunk/dists/iphone/scummvm.xcodeproj
Even if you manage to run ScummVM on a non-unlocked phone, I think that there isn't any way of actually transferring the games in the iPhone, as the non-unlocked one doesn't have FTP
The only way to transfer games to un-jailbroken devices is to actually include the game files in a copy step when deploying ScummVM itself from XCode (so you need to have a developer certificate).