in the survival area [after u beat heatran]
Chat with our AI personalities
try it again and if that doesnt work you need to catch every Pokemon
It means that that certain Pokemon had pokerus and is no longer able to get pokerus again
Some people will argue with me but i think the best place to train is at the Pokemon lugue you can battle them over and over again
you can only use Action replay or start the game again.
you can do about anything after you just cant beat the gym leaders again.