It's not possible to trade from Diamond, Pearl or Platinum onto any previous game regardless of what system it was for.
Start with the first starter Pokemon on leafgreen. If you are okay with deleting your data, then this will work. Have the first Pokemon and six others in the PC, and transfer your Pokemon onto your platinum game. Then once that is done, and you are all done catching the transferred Pokemon, then save the game. Eject the platinum game card. then when you are going onto the gameboy game, press "new game". Choose a different starter Pokemon, and do the same thing as the first, but have six Pokemon in bthe PC. When you are don't with that, do the same as before. Eventually you will have all three starters from leafgreen on your platinum!
log onto the GTS
trade from platnium to diamond through either nwc orthrough having 2 ds systems
It is possible you are trying to trade Pokemon from the hoenn region (ruby, sapphire, emerald) onto firered/ leafgreen. This is not possible until have done a certain thing. The other possibility is that you need at least 2 Pokemon to trade.
first it is arceUS second yes you can trade legenderys onto Pokemon soul silver but only from pearl,diamon and platinum
1 way is 2 trade it from Pokemon colloseum onto a GBA game (firered, leafgreen, ruby, sapphire, emerald) and then migrate it on2 diamond/pearl.
Yes of course you can
to trade from leaf green/fire red to diamond/pearl/platinum you av 2 put the gba game in the gba slot an the ds lite and go onto dia/pearl/plati and select emigrate from leafgreen/firered and select the Pokemon u want 2 transfer then on the ds games go to pal park and u can catch the Pokemon u av transfered :):):)
You can migrate it from Ruby/Sapphire/Emerald. migrate it onto platinum from leafgreen firered ruby emerald or Sapphire or use the cheat. signed:pokemonexpert
Sorry, but Pokemon Diamond and Pearl don'tconnect with Pokemon DX, but you can trade Pokemonfrom Pokemon Heart Gold/Soul Silver onto Pokemon Diamond, Pearl and Platinum, and you can Migrate Pokemon from Pokemon Ruby, Sapphire and Emerald.
It is impossible to download a game-boy game onto Pokemon platinum
no its only the old Pokemon ranger and diamond and pearl