you have to catch 60 Pokemon first
You have to beat the Elite Four at least once then talk to Celio (the guy in the Island's Pokemon Center) then go to Mt. Ember and learn the password and battle them.
no you can't
you can only catch them at spear pillar after you beat the elite four
I'm not positive about in Fire Red, but in all of the more recent Pokemon games, you can check the PC for a "Hall of Fame" section and if it's there, then you've beaten the Elite Four.
You can only get Shaymin, Darkrai, Manaphy and Arceus if you have beaten the elite four. You also need a national dex before you can go after any of them. Hope I helped.
You need the passwords. Explore the other islands first
You have to beat the Elite four first.
Okay you need the national dex and have beaten the elite four, then go to one island and go to mt ember and beat the rockets if you did this notice there is a cave nearby go in and use the HM strength to move the boulders to get to a room where the ruby is grab it then take it to celio in the one island Pokemon center and now you can go to islands 4-7.
After beating the elite four and getting the national dex.
the ruby is retrieved after beating the elite four and going to the cave blocked by rockets in Mt. Ember. The sapphire is retrieved after using cut on the door with braille on either 6 or 7 island. it will then be stolen by a rocket and will have to be taken back in a factory on 5 island after getting the two passwords. this is all only after you've beaten the elite four.
you would have to get the gem To pass team rocket at mt ember you need to beat the elite four and get the national dex then go back and beat the rockets and go in and get the ruby.
the ruby is in Mt. Ember you have to defeat the 2 rocket grunts in front of the entrance
It only appears after beating the elite four and you have obtained the national dex but when you enter mt ember notice to rocket grunts to your right they opened up a cave for you beat them go in and find the ruby in there.
Beat the elite four for the first time, talk to celio, then check it out. The rocket guys should be gone and instead there's a cave
it is in mt.ember you have to battle team rocket grunts to the right
No.
After you've beaten the Elite Four, and Oak has given you the upgraded pokedex, head over to MT. Ember. Go to the right, and you should battle the two rockets there. Then, Proceed into the cave. At the end, there should be the ruby. Hope that helped!