【PS4: General】Previously Purchased Content (DLC) Is Unusable After Replacing PS4 Console
If you attempt to use previously purchased content (DLC) on a different PS4 than the one it was originally downloaded on, you may see the message:[To use this content, you need to authenticate this system].
When this message appears, please authenticate your PS4 by signing in with the Sony Entertainment Network account used to purchase the DLC and enabling [Device Authentication] under [PlayStation Network] settings.
For more details about device authentication, please check Here.
(You will be redirected to the relevant section of the official Sony Interactive Entertainment website.)
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