Things You'll Need
Instructions
Obtain the National Pokedex from Professor Birch after defeating Sidney, Phoebe, Glacia, Drake and Wallace in "Pokemon Emerald."
Have a friend loan you his Game Boy Advance. Insert "Pokemon FireRed" in the borrowed device. Defeat Lorelei, Bruno, Agatha, Lance and the Pokemon Champion. Catch 60 different Pokemon in Kanto and speak to Professor Oak to get the National Pokedex.
Talk to Celio at One Island and defeat the Goons at Three Island in "Pokemon FireRed." Rescue Lostelle and take her to Two Island. Give Bill the Meteorite and get the Tri-pass from Celio. Get the Ruby Plate at Mount Ember and the Sapphire Plate at the Rocket Warehouse.
Go to the Diglett's Cave and capture Diglett with an Ultra ball in "Pokemon FireRed." Power off the handheld after saving your progress. Place "Pokemon Emerald" into another Game Boy Advance. Link "Pokemon Emerald" and "Pokemon FireRed" with the GBA Link Cable.
Power on both GBAs once you have plugged the Link Cable into both handhelds. Trade the Diglett from "Pokemon FireRed" to "Pokemon Emerald" at any Pokemon Center.