He wont be in his lab until you complete the Sinnoh pokedex. Then he will be in his lab and also professor oak will also come to rowans lab. Hope this helps :-)
His lab.
You wait until you beat the elite four and professor Elm will give it to you when you beat the elite four.
If you have the National Pokedex, Prof. Oak will be in a house in southern Eterna City.
He's in Pallet Townn. First you need to beat the Elite Four Johto to go to Kanto.
No you can't use the azure flute after you beat the elite four
His lab.
most important, you have to beat the elite four. Then go to professor Rowan's lab, there you will find professor Oak and he will give you a poke rader.hope this helped!
You are supposed to go to Sandgem Town and talk to Professor Rowan, the old thingy.
you have to beat the elite four and the champ plus it pro oak yes old man that does it not the jurk thatswitch with him
You wait until you beat the elite four and professor Elm will give it to you when you beat the elite four.
you have to see every Pokemon in sinnoh then go to professor rowan and he will give 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.
1. Beat the elite four 2. See all 150(250 for Platinum) Pokemon in the sinnoh dex 3. Talk to professor Rowan
Beat the elite four and then go to Rowan then he will give you the poke' rader
After you beat the Elite Four you must see every Pokemon in your region at least once to fill up your Pokedex, then talk to Professor Oak/Rowan/Birch whatever and he gives you it
After you defeat the Elite Four go to sandgem city and talk to professor rowan and then professor oak will come they will talk then give you the nationaldex
If you set your calendar on your DS to your registered birthday and talk to you Professor Rowan's assistant they will wish you a happy birthday! This is only possible after you beat the elite four.