Things You'll Need
Instructions
Connect your Gameshark to the game slot on the Game Boy Advance. Connect the "Pokemon Emerald" game cartridge to the top of the Gameshark.
Turn on the system to enter the Gameshark cheat menu.
Enter the master code first to set the Gameshark to recognize your "Pokemon Emerald" game cartridge. The master code is D8BAE4D9 4864DCE5 A86CDBA5 19BA49B3.
Enter the "walk through walls" cheat after the master code. The cheat code is 7881A409 E2026E0C 8E883EFF 92E9660D.
Exit the Gameshark menu and load your "Pokemon Emerald" saved game.
Fly to Sootopolis City and enter the house with the trees blocking the doorway. You can now walk through the trees and access the next room.