If you have a Pokémon Platinum ROM file, you can check its hash using free tools:
Assuming you have found the pokemon platinum 4997 rom.nds file, here is how to go from download to Champion of Sinnoh. pokemon platinum 4997 rom
The Ultimate Base: Why the 4997 Pokémon Platinum ROM Matters If you have a Pokémon Platinum ROM file,
Modern emulators like and melonDS handle RAM differently. The 4997 revision handles save states more gracefully on these emulators, reducing the risk of "Bad EEPROM" errors. pokemon platinum 4997 rom