```
0202F0AA 000A
```
This code will unlock all Battle Zone bonuses, including the ability to rematch Gym Leaders and Elite Four members, as well as the ability to catch certain Legendary Pokémon.
To use this code, you will need a Nintendo DS or DS Lite with an Action Replay DS device. You will also need a copy of Pokémon Pearl. Once you have all of these items, you can follow these steps to use the code:
1. Turn on your Nintendo DS or DS Lite and insert the Action Replay DS device.
2. Turn on your Action Replay DS device and select the "Codes" option.
3. Enter the Action Replay code for all Battle Zone bonuses.
4. Select the "Activate" option and then select the "OK" button.
5. Start your copy of Pokémon Pearl and load your save file.
6. You will now have access to all Battle Zone bonuses.