Instructions
Insert the GameShark cartridge in the Game Boy Advanced's game slot. Insert the "Pokemon Sapphire" game cartridge into the slot on the GameShark. Move the GameShark's power switch to the "On" position and move the Game Boy Advanced's power switch to the "On" position.
Press "Up" on the system's D-Pad to highlight the "New Game" option and press the "B" button. Enter the words "Pokemon Sapphire" in the space provided and press the "Start" button to save the game's name.
Enter the following master code in the space provided:
928817F0298A
50F818720DD7
E005BA4B98A5
After entering each line, press the "Start" button to move down to the next line.
Press "Up" on the system's D-Pad to highlight the "Add New Cheat" option and press the "B" button. Enter "Shiny Pokemon" in the space provided and press the "Start" button to save the cheat's name.
Enter the following code in the space provided:
81FE44749C55
A0FA44FCCC7F
11B25A7BD975
56FC0D142272
D9A856E44D4C
Press the "Start" button to save the cheat code.
Highlight the "Pokemon Sapphire" game from the GameShark's game select screen and press the "A" button to select it. Highlight and select the "Shiny Pokemon" code to activate it. Press the "Start" button to begin playing the game.
Use the D-Pad to navigate your character into a cave or area with tall-grass. When you encounter a wild Pokemon, it will be the shiny variant of that Pokemon. Fight the Pokemon until its life shows red as you would any other Pokemon, and throw a Pokeball to catch it.