You will need work with Lorelei on Island Four before you see will return to the Elite 4 making them challengeable again.
just use a good team.........i cant help you with that
sorry,but they fixed tht patch you cant do it anymore
use vs. seeker and amulet coin.
you cant buy them from gamestop anymore. you can buy them at ebay.com.
maby you have a old version of Pokémon LeafGreen and when it came out , the Cerulean Cave wasn't finished.
the ruby is in Mt. Ember you have to defeat the 2 rocket grunts in front of the entrance
you cant go underwater in leafgreen!!
you cant
you cant
you cant
you cant.
you cant