You're looking for information on the Pokémon Black 2 ROM, specifically version 6149.
WPA Support: Allows the game to connect to modern Wi-Fi routers (the original DS only supports WEP). Pokemon Black 2 6149 Rom
Expanded Pokédex: Unlike the first Black/White games, the regional Pokédex includes Pokémon from previous generations (like Lucario and Mareep) from the very beginning. You're looking for information on the Pokémon Black
Black/White VS Black 2/White 2: What's the difference? : r/pokemon Pokemon Black 2 6149 Rom