Edited ROMs can only be played on exploited consoles.
Please do not ask (nor private message me) how to obtain/dump/decrypt/unpack/repack ROMs as that is unrelated to the functionality of this program.
Download Link At Bottom of Post
pkNX is a ROM editor for the Nintendo Switch Pokémon games with tools to edit various game data.
All editors displayed are fully functional.
Simply feed it a folder (drag/drop or by File->Open) which contains the game romfs & e