If you have the ROMs, follow these steps:

Este artículo es meramente informativo. No proporcionamos enlaces directos a ROMs con derechos de autor. Te explicamos el proceso legal y técnico.

is a search for access, not just a file. While you can legally use your own copies of Pokémon Black or White to play Unova in PokeMMO, downloading ROMs from unofficial sources is not recommended or supported.