game shark or action replay
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u cant
more like 493 master balls. its a cheat on the AR look up the code for it. its called Pokemon modifier.
In Pokemon Diamond, Pearl and Platinum you can get one master ball from Master Cyrus. To get more, you have to cheat using a Action Replay DS or DSI, or you can trade Pokemon with your friends and receive master balls from the Pokemon that they traded.
You can't without using cheats.
ACTION REPLAY
There is only one master ball in Pokemon diamond. But there is a cheat for getting a WHOLE lot more. Look it up at how do you get 98 master balls? I don't know where the master ball is I think it's in a team galatic headquarters.
I don't think you can
You need action replay which you can find at game stop. then you scroll down and find more master balls. I don't have the code though, sorry but there is one of the wiki answers where it tells you the code. it's how do you get 98 master balls? I hope it helped!
you dont......you have to cheat but i am still trying to figure out how.
in all of the Pokemon game, the way to get a master ball is to beat the boss of the criminal organization and you will get this as a reward. but i heard that you can get more master balls in pearl, diamond and platinum in jubilife city in the tv station by that lottery stand but i think it will take a lot of trading with many trainers to get one master ball just to match the numbers. but i think there is a cheat to get A LOT of master balls. I hope that this answer is helpful to many owners of these Pokemon games.
To get more than one Master Ball, you must trade Pokemon that are holding them to your game.