beat the elite 4
The rainbow pass is a key item in Pokemon FireRed version. To trigger the events to get it, you first need to own 60 different Pokemon.
You have to get the ruby and give it to celio. He will then give you a rainbow pass
beat the elite four then talk to celio on island 1
It is not possible to obtain the rainbow pass in Pokémon Emerald. It is only available in Pokémon FireRed and LeafGreen.
you have to find the ruby in mt ember and bring it to celio but first you need the national pokedex--Check this answer out: http://wiki.answers.com/Q/How_do_you_unlock_islands_after_beating_the_elite_four
Larvitar is in Seavault Canyon, which is on Seven Island. (Need rainbow pass to get to Seven Island).
Talk to Celio on One Island. (I think you have to beat the Elite Four first)
Go tohttp://sites.google.com/site/thewaterpath/its on island seven you will have to have the rainbow pass to get there.
on island 1, in the pokecenter. u can get to island 1 by acheiving the rainbow pass
You must beat the seven gym leaders, the elite four, and your rival. Then you have to capture 60 Pokemon to get your Rainbow pass the will allow you to travel to Island 7 in Pokemon FireRed.
Yes, Celio from One Island will give you the Rainbow Pass after you bring him the Ruby you find in Mount Ember. Of course, you can not get there unless you have beaten the Elite 4.
Give it to celio in the one island Pokemon center he will give you a rainbow pass which allows you to access islands 4-7.