Copy this newly dumped file and place it in the SAK/bin folder to overwrite your old, incorrect 2021 keys.
The easiest solution for the "Are the prodkeys correct" error has always been simple: sak are the keysdat prodkeys correct 2021
The "keys" you are referring to are essential decryption files used by the Nintendo Switch's operating system to run software. In the world of emulation (using programs like Yuzu or Ryujinx), having the correct prod.keys and title.keys is the difference between a working game and a black screen. Copy this newly dumped file and place it
User interface (concise)