Nah.. It's all good if you're only injecting saves and not installing NSPs. I did this myself I don't own LGP and BD but I injected save files for them. It's been months since and I'm still not banned. If you need help injecting saves how I did it just ask here. You don't need to install games...
can someone help me? I can't seem to make it work at all
EDIT: everything else works except for agnes bravo bikini and ringabel's Eastern war garb..they showup in game but the sprites didn't changed