How to get other islands on Pokemon Firered game?

Question

i read that after you beat the Cinnabar Island gym you get taken to 7 new island but i've only can only get to islands 1,2,3 and i'm not sure if i'm doing something wrong. When i go vermillion city harbor he only says 1,2,3 island

Answer 1

on the third island you have to surf up and then youll find it

Answer 2

You have to beat the elite four, get the national dex, and find the ruby plate on island 1. Give it to the guy in the island 1 pokemon center and he will give you a rainbow pass.

You get the national dex by owning at least 60 pokemon and get the ruby plate on island 1 where the team rocket grunts are standing but you have to of become the champ or they won't budge.