Things You'll Need
Instructions
Insert your Pokemon Platinum cartridge into the cartridge slot on the DSi Action Replay.
Insert the DSi Action Replay cartridge into the cartridge slot on your DS.
Turn on the DS. The Action Replay will recognize the "Pokemon Platinum" cartridge.
Click "Add New Code" and enter the name of the code. You can name it whatever you want, but it's best to name it something descriptive, such as "Deoxys."
Press "START" and enter the code:
94000130 FCFF0000
B21C4D28 00000000
B0000004 00000000
10001170 00000182
D2000000 00000000
Press the "START" button to submit the code.
Open the "Codes" menu, highlight the code you created and press the "A" button. A check mark will appear next to the code.
Press the "START" button to start the game or choose "Start Game" from the main menu.
Load your saved game and go to the museum in Oreburgh. Hold down the L and R buttons and talk to the guy with the glasses behind the counter. The Deoxys egg will appear in the empty slot in your party.