I did what the readme says:
1. DLDI patch ".nds" for your first cart.
2. Goto resource folder and rename your second carts DLDS file to "dldspatch.dlds"
3. Drag and drop the DLDI patched ".nds" file into the ".bat"
4. Rename and copy the "_DLDS" file to either flashcart.
5. Load and run!
But i...