Complete Pokémon Ultra Sun Rom Guide: Dumps, Mods, Cheats, and Compatibility
By Alexander Ross
Managing save structures across emulators and hardware requires precise tooling. The PKHeX save editor remains the premier program for editing and verifying Pokémon Generation 7 save files (`main`).
To modify a game running on a modded 3DS, players dump their save data using the homebrew utility Checkpoint. Loading the resulting `main` file into PKHeX grants full visibility into hidden personality values, individual values (IVs), effort values (EVs), and secret trainer IDs.
Safety in save manipulation comes down to byte-level legality checking. PKHeX incorporates an internal database of distribution event flags, encounter slots, and met locations. A green checkmark signifies that the generated monster matches factory validation rules; a red warning flag denotes illegal move combinations, impossible catch balls, or broken memory structures.
If you transfer modified Pokémon into modern Pokémon Bank or Pokémon HOME environments, invalid memory structures trigger immediate trade-lock bans. Never inject event Pokémon into your save without matching their original encounter timestamps and wonder card memory fields.
Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.
