Your Update NSP must be for the same Region (USA, EUR, JAP) as your base game.
This is where most people mess up. The order of installation matters for the ticket to register correctly. mortal kombat 11 switch nsp update dlc work
If you see the DLC characters but they are locked or prompt you to "Purchase," try these fixes: Version Mismatch: DLC often requires the Your Update NSP must be for the same
The following guide details how to manage Mortal Kombat 11 NSP updates and DLC on the Nintendo Switch Understanding Content File Types If you see the DLC characters but they
Region and titlekeys: DLC and updates must match the same title ID/region. Using mismatched region files (e.g., EU vs. US) can cause conflicts. Titlekeys or keysets are required by installers to install some NSP formats—ensure your tools and keysets are up to date.