You can't. You can only catch deoxys in Pokemon firered leafgreen.
There are sadly no special events to catch Deoxys in Sapphire. You HAVE to trade a Deoxys caught in an event from FireRed, LeafGreen, or Emerald.
Unfortunately, you cannot catch Deoxys without the Nintendo Event. This event has been over for a while.
Go to birth island and push the triangle over and over again. Eventually Deoxys will appear.
From what I understand, Yes!! I think it's a glitch, but you CAN'T catch deoxys normally in Pokemon FireRed. and in Pokemon ranbow (only in japan,and internet. even on mars
DEOXYS!! im pretty sure it disguised as a tree near Navel rock
you can get deoxys at birth island
You can't catch Deoxys in the wild or a special place. But if you got it in Pokemon FireRed, LeafGreen, Sapphire, Ruby, or Emerald you can migrate Deoxys in the Pal Park in the Kanto region in Fuchsia City.You cannot obtain Deoxys legitimately in Pokémon SoulSilver. You must take advantage of an Event in Pokémon Emerald, FireRed, or LeafGreen to go to Birth Island using an Aurora Ticket, and catch it there, then use the Pal Park to transfer it to SoulSilver. Alternatively, you can cheat.
You can't really get Deoxys in Pokemon Ruby and Sapphire the only way to get it into your game is to transfer it from Firered and Leafgreen and Deoxys is located in Birth Island in Firered and Leafgreen.
There is no deoxys
You would need to use an Action Replay or transfer it from Pokemon Emerald, FireRed, or LeafGreen, for it is impossible to catch Deoxys in any location in Pokemon Diamond, Pearl, and Platinum.
You catch deoxys at birth island.
You can't catch Deoxys in Silver..
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.
You can't catch Deoxys in soul silver
You can't catch it (well you can but you have to do this poke wifi thing that isn't avalible) or use gameshark
Deoxys is a legendary Pokemon which has various different forms. To find one in FireRed version, you need to have an Aurora Ticket.
Because leafgreen and firered are remakes of generation one games, you can't get a deoxys in either except through trades, action replays, or Nintendo events
Bleddy fool you cantcatch deoxys in fire red
you get it a a special event or trade it over from diamond/pearl/platinum or do palpark for ruby/saphire/emerald/leafgreen/firered
When you catch Deoxys it is level 30.
By migrating Deoxys or an event.
U have to catch deoxys with a timer ball or a master ball! He is lv 80. U have to catch deoxys with a timer ball or a master ball! He is lv 80.