you fill the whole sinnoh pokedex and then go to prof rowan and prof oak comes in talks and then you help him out easy as that
You need to obtain the National Pokédex from the Prof. Oak first.
get all the Pokemon in your pokedex from sinnoh then talk to professor rowan and oak will give it to ya
Complete the Sinnoh dex then go to professor rowen for it professor oak, he will enter the room and give you it.
go on Google:Web type in Pokemon platinum. when you are on it, put your DS on, ask a parent to do this.
You have to see every pokemon in the regional pokedex. Then you have to obtain the national pokedex from i think professor oak or professor rowan.
you need all of the national dex Pokemon then talk to proffeser oak
In Pokemon Platinum to get the National Dex you will need to have seen all 210 Pokemon in the Sinnoh Dex then talk to Professor Rowan and then after a while Professor Oak will give you the National Dex!
You must see all the Pokemon in sinnoh and get the national dex. then prof oak will give it to you
See all 210 of the sinnih dex and talk to oak
You need to obtain the National Pokédex from the Prof. Oak first.
you need action replay in your ds
get all the Pokemon in your pokedex from sinnoh then talk to professor rowan and oak will give it to ya
Oak just shows up out of nowhere that's it.
Prof. Rowan does as your starter . U can choose piplup, turtwig, or chimchar
I believe you meet him after completing the Sinnoh Pokedex. Then he will update your pokedex to national.
You have to get all 210 Pokemon in the sinnoh dex. Then go to Rowan's office and professor Oak will come in and give you the national dex.
You must have seen all pokemon in the game then go to the lab in sandgem town. oak will appear and upgrade your pokedex.