You have to transfer it from from GBA by Pal Park. I found the info in http://www.serebii.net/pokedex-dp/384.shtml
you don't get rayquazza in Pokemon diamond the only way to get rayquazza is to transfer one from Pokemon ruby Sapphire and Emerald to Pokemon diamond
You actually cant physically catch a rayquazza in diamond or pearl. If you have diamond or pearl and you want a rayquazza you need to get pokemon emerald capture it on there and then migrate it onto your peral or diamond game. Cheers boiz and gyrls.
You can use a action replay to hack for it or trade it from another game.
u have to beat the Elite 4 then type in at Google " video for where to get rayquazza in Pokemon sapphire." that's it
Ash has 6 Pokemon in Diamond version
I dont have pokemon diamond
To my knowledge it is impossible, unless of course you use a action replay or just transfer it over using PalPark
Rayquazza wasn't made until more than a decade after Pokemon Blue was made.
u can't get a lvX Pokemon in diamond version
you need to have the sapphire version in the gameboy slot and the diamond version in the other slot
If you have the Pokemon Diamond Version booklet go to the content page and look up how to migrate .
How does riolu learn aura sphere in pokemon diamond version?