you need the Aurora ticket.
You can't catch it on Firered you can only catch it in Emerald
easy go to mysterygift option and click on wonder giftThere is currently no way to get the Aurora Ticket in Pokémon FireRed because you had to go to a special Nintendo Pokémon distribution event which is no longer available.
TO CATCH THE POKEMON LATIOS AND LATIAS IS TO GET THE AURORA TICKET BY USING THE NINTENDO EVENT ON THE MYSTERY GIFT
In Ruby and Sapphire, you cannot get Deoxys without trading it. In Emerald, FireRed and LeafGreen, you need the Aurora Ticket, which is an event item. The only way to get an Aurora Ticket now is by cheating.
To get Deoxys, you need the Aurora Ticket from a Nintendo Event. To get Latias, they are in the wild after you beat the Elite Four. To get Mewtwo, you need to trade from LeafGreen or FireRed.
Cheat to get the aurora ticket then go to birth island to capture deoxys.
you can go to navel rock to catch lugia and ho-ho
there is no way
To get Pokemon firered on PC download a vba and Pokemon firered ROM
You can catch a Ho-Oh at Navel Rock in Pokemon FireRed.
You can catch Moltres at Mt. Ember Peak in FireRed.