You can't.
You wanna know the answer? No. Same possibility as you catching a deoxys with a newborn pichu without a gameshark.
You don't get Deoxys from anyone in the mining museum You have to trade it from Diamond/Pearl, or migrate it from Ruby/sapphire/emerald if you went to any of the events.
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
You get it via special events on wifi.
No.
No you can't catch deoxys by using cheats
Unfortunately the event has already been over :C
you only can get them with cheats (i realy hate that with all that events and cheats =[ )
There is no deoxys fossil. To obtain Deoxys in any of the games you have to get it through an event or through cheats.
cheats
Actually, you can't get Deoxys w/o cheats. You have to go to a Nintendo event. So even if you try to talk to the guy in the space center(which others say)you can't go to the moon. It's impossible to get Deoxys without cheats.
impossible without cheating
You can trade for them. That's all I can say.
To get Deoxys, you have to migrate from leaf green ruby fire red saphire emerald versions, just to get Deoxys
you need a ticket then go to birth island
You can't.