Here are some valuable tips and tricks to help you catch all 649 Pokémon:
File size: ~512 KB
Pokémon that do not originate from your specific Trainer ID (TID) and Secret ID (SID) will disobey you in battle if their levels get too high. To avoid this, either use PokeGen/PKHeX to match the save file's Trainer ID to your character, or rely strictly on the low-level Pokémon provided until you earn enough Gym Badges to command higher-level monsters. Challenge Mode Unlocked
To use a custom .sav file, you generally need one of the following setups: For Emulator Users (DeSmuME / MelonDS)