The official name of island 4 on Pokemon FireRed is Floe Island. To access Floe Island you need the Tri-Pass from Bill. To obtain the Tri-Pass you need to have defeated the Gym Leader of Cinnabar Island.
Beat the pokemon league.
In icefall cave.
in the cave on 4 island
That's not possible.
icefall cave on island 4
The Pokemon day care for Pokemon Leafgreen/Firered is on island 4. You have to beat the elite 4 and get the machine on island 1 working to go there.
you can find it in 4 island in icefall cave.
go to one island and talk to celio
it is in ice fall cave on 4 island
I believe it's Island 4, but you must have beaten the Elite 4 to gain access.
She is in the cave on 4 island. When you meet here there she returns to the elite4.
you have to beat the elite 4 and catch 60 or more pokemon.