It is crucial to understand that . The tool explicitly requires this file to be present in its ztools directory.
Copy the prod.keys file you extracted from your Switch SD card. nsc builder keys.txt
Once you have the file, proper placement is crucial. NSC Builder generally looks for the key file in specific locations. If the tool cannot find it, you will likely see an error message like "Keys file not found" or a prompt to locate it. It is crucial to understand that
💡 Sharing or downloading these keys is considered a violation of DMCA and Nintendo's Intellectual Property policies . Users are legally expected to dump their own keys from their own hardware using homebrew tools like Lockpick_RCM . Once you have the file, proper placement is crucial
This occurs when you try to process a newer game, but your keys file was dumped from an older Switch firmware. You must update your Nintendo Switch console to the latest firmware, reboot into Lockpick_RCM, and dump your keys again to generate the newest Master Keys. 3. Keystring Format Errors