You must get a ticket from a Nintendo Event to go to Birth Island.
On Birth Island.
you cant get to birth island anymore without gameshark. if u hav gameshark, go to birth island and go straight and u will find it. hope this helped! Trevor Boles :]
hes in birth island
first of all he's not on mirage island, it's birth island. and yes u do. also if u didnt already know this, u can only get to birth island by cheating with a cheatcode device.
There is a gameshark code for Pokemon Emerald that lets you battle Deoxys anywhere, I think you find it at www.gameshark.com. Otherwise, you need to go to Birth Island.
You have to have been at a Nintendo event to get access to Birth Island.
Birth Island is a secret Island that is the home of Deoxys. You can only get there if you have the Aurora Ticket.
i have beaten the game, and there is no birth island.
you can only get without a Nintendo event or gameshark by owning fire red and going sout west of third island and in a pokeball you find a mystic ticket and itll let you sail to birth island and farawy island (fing ticket on a small platform) Faraway island is mew and birth island is deoxys
youyou can cheat a codebreaker to go in birth island you cant visit birth island without cheat
you can find it in your bag or go to the ship and see if birth island is an option :D