Asked in
Pokemon Diamond Pearl and Platinum

What causes action replay codes not to work when they were working before why does it say unknown game when i put in Pokemon diamond?

Answer

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Wiki User
April 12, 2009 1:10AM

It's because the game you have inserted isn't in your ar's codelist if you have the program you can drag and drop the codelist from the "MY CODELISTS" section into the "NINTENDO DS" section. That should solve your problem.