After you defeat the Elite Four and the Champion, you will need to make sure you have seen all the Pokemon in the Sinnoh Pokedex before you go to Professor Rowan's lab where he will update your Pokedex to the National one. Once you get to the lab, Professor Oak will be there. After that, you will find him at Pal Park.
professor oak gives it to you
First see all the Pokemon in The Sinnoh Dex. Then go to Sandgem Town and talk to Professor Rowan. Professor Oak will come and upgrade your Dex to National Dex.
Complete the Sinnoh dex then go to professor rowen for it professor oak, he will enter the room and give you it.
You don't get it in Bebe's house. You need to see all the Pokemon in the region and then talk to Professor Rowan. Then Professor Oak will come in and upgrade your pokedex to national.
get all the Pokemon in your pokedex from sinnoh then talk to professor rowan and oak will give it to ya
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 don't battle Prof. Oak.
professor oak gives you the national dex in rowans lab. after you finish the pokemon legue you talk to professor rowan then oak comes to you and gives you a national dex but only if you finish the first pokedex. if you haven't finished the first dex you need to go and finish it. then go back to professor rowans lab and oak will be stood outside or inside and he will hand you the national dex.
fill up sinnoh Dex and go to the Professor and Oak will come and upgrade your Dex
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.
get national Dex by going to Rowen's lab
professor oak gives it to you
First see all the Pokemon in The Sinnoh Dex. Then go to Sandgem Town and talk to Professor Rowan. Professor Oak will come and upgrade your Dex to National Dex.
yes you do but not complete the national dex
You get it from Professor Oak after completing the Sinnoh Dex, getting the National Dex and going to Pal Park.
when you beat the elite four and have 100 Pokemon go to professor oak and he will give you and Gary the national dex
you need to first complete your first dex then go to the computer and and select rowan`s pc.then you can go to his lab and professor oak will walk inside and he will give you your national dex. signed brannon203