VC Yellow and/or Crystal Editor

[PokeMaster99999]

Is there any way to edit Yellow and/or Crystal on the 3DS VC?

Not edit the player's Pokémon - PKHeX can do that already - but edit item data, move data, Pokémon stat data, Pokémon learnset data, wild Pokémon data, Trainer data, etc.? I don't think PK3DS supports Gen I/II; as far as I know, it's VI/VII-only.

I'm putting this in 3DS R&D because a) there's no GB/GBC R&D forum, b) these are technically 3DS games, and c) I don't know of a more appropriate place to put it.

[wejhvabewjty]

Hack ROMs can be installed as CIAs. Your best bet would be to edit the rom as a .gbc. Once complete, you can build a .cia from it and install it in your 3DS.