If you attempt to apply a patch to a bad dump, an alternative regional version (like a European ROM), or a v1.1 revision dump, the data coordinates will shift.

The quest for the ultimate Pokémon experience often leads players to the deep archives of ROM hacking communities. Among the most searched but enigmatic titles is the "1986 Pokemon Emerald Trashman" ROM, a specialized version often used as a base for high-level competitive mods and unique community challenges. Understanding the "Trashman" Legacy

: This is the scene release number assigned by groups that catalog Game Boy Advance ROMs. "Trashman"

: Click the patch button to merge the files into a playable Game Boy Advance format.

What's the difference between different roms? : r/PokemonROMhacks 20 Aug 2018 —