If you did everything right (and I had my instructions right!), Pokémon Diamond should respond to the virtual GBA slot being loaded with the correct GBA game, and allow you to use Pal Park. if your second game is Pokemon Fire Red.GBA go to Battery Folder and change the Pokemon Fire Red.sav to Pokemon Fire Red.SV2 (if your problem is you can find the extension. Then navigate to Pokémon Diamond and touch it or press A. To change the filename, simply change the extension file name as you would rename a file. There are games in the same links given in the above step ( I recommend love roms) Step 3: This Is the Video for Downloading the Game. For example, your GBA save would be called 'Pokemon Diamond.nds. Name it the same as the DS ROM you want to use, plus '.gba.sav'.
Take it from /NDSGBA/GAMERTS and put it in your DS ROM directory.
For example, if you want to use it in Pokémon Diamond, and your DS ROM is Pokemon Diamond.nds, your GBA ROM should be an exact copy of your GBA Pokémon game, named 'Pokemon Diamond.nds. Using a computer, copy the GBA ROM to your DS ROM directory, named the same as the DS ROM you want to use Pal Park with, plus '.gba'.sav, which is a raw battery-backed save data file. Load NDSGBA 1.21 with game_config.txt, then your Pokémon game, then your real-time save.
