no you cant you will need a action replay to hack the flute otherwise you cannot get it
you have to get the azure flute and go were you got palka/dialga depending which game
There are 2 ways that you can catch it.First,you need action replay.Second,there is a arceas event but passed
You can't
Arceas
no
Arceas has to be caught in Pokemon diamond, pearl, or platinum, then traded to Soul-Silver and HeartGold.
Sadly, you can't get Arceus in HeartGold or SoulSilver. The only way to have it in HG/SS is to trade it from either Diamond, Pearl or Platinum.
You have to trade it from Diamond, Platinum or Pearl
hall of oragin
Sorry no way to. Trade with diamond or pearl
go to spear pillar with it an you will get arceas if it is a azure flute