ShadowRock9

Hi, hoping to get some help. I am attempting to remove legendary pokemon restrictions in ORAS battle maison (https://projectpokemon.org/home/forums/topic/39258-solved-some-progress-i-mightve-made-in-removing-battle-maisonbattle-tree-restrictions-banlist/) Currently I have already used pk3ds to extract an Omega Ruby .3ds file, and subsequently have already edited the rom file a/1/7/0 with a hex editor as per above instructions. Not sure if it matters, but opening the folder that contains the exefs and romfs folder in pk3ds yields the error "failed to load game data from romfs. please double check your ROM dump is correct. Access to path 'backup' is denied." I am now unable to rebuild the .3ds file after I open it in pk3ds. the option to do so is blanked out; only rebuilding it as a CRO is available. This is where I am stuck at at the moment. Any help is very much appreciated. thank you.