Getting to Island 8 and 9
Beat the Elite Four and the Champion, then make sure you catch at least 60 Pokemon. Go to Prof.Oak and talk to him, he should give you the National Dex. You can visit the Seven Seven islands, by going and talking to Celio, but to visit Islands 8 and 9, you must go to Nintendo Events to download Mystic and Aurora Tickets. But please note that once you put in the code, walk through a door, and you will reach the Islands 8/9, but then take out your cheating device to prevent further warps. Please ENSURE that.
http://ts3.mm.bing.net/th?id=I.4891577640682830&pid=15.1 <I think this is one.
Sevii Isles 8 and 9 are locations which are not accessible through normal gameplay in Pokémon FireRed and LeafGreen. However, unlike other similarly-named unreachable areas, they have actual map data.
The event has now passed so you will have to cheat, I dont like it but dunno about you!
HOPE I HELPED! ;D