Ensure your dumped file is named exactly prod.keys (all lowercase).

If you try to parse a modern game file compiled with a high firmware version using an older key revision, SAK cannot handle the asset blocks and defaults to throwing the error message: "Are the keys.dat/prod.keys correct? Is the selected NSZ file a game?" Step-by-Step Fixes for the "Are the Keys Correct?" Error

Switch Army Knife (SAK) acts as a graphical user interface (GUI) wrapper that bundles several command-line homebrew utilities. To process game files legally or accurately, it requires precise cryptographic handshake files:

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Accurate product keys are essential for several reasons:

SAK requires prod.keys and/or keys.dat to be placed in its bin folder to function correctly [ 0.5.1 ].

To manage product keys effectively, users can follow these best practices:

"They're correct," Silas said, his voice dropping an octave. "The signature matches the hardware level of the new Zen-7 units. These are the genuine prodkeys."

: Ensure the key file is located in the correct subdirectory, usually the SAK/bin/ folder.

Using accurate and correct product keys is essential for several reasons:

SAK is an all-in-one GUI tool used by the emulation community to manage Switch files. Its primary job is to convert and compress files—like turning .xci into .nsp or .nsp into .pfs0 .

The most common mistake is placing your key files in the wrong directory or naming them incorrectly. SAK expects its cryptographic components to be stored within its processing folder.

If you are seeing this error message, it is usually due to one of the following reasons:

Use the updates64.txt rename trick or put prod.keys in /bin . Update prod.keys to firmware v21.0.0+. NSZ Conversion Fails Ensure SAK is in a directory without special characters.

If you would like to look into alternative methods, tell me and what your target device or emulator is , and I can suggest alternative tools.

Ensure the keys are in the same folder as the SAK executable or in the designated /bin or /keys subfolder.

"Are the hot-swappable key sockets on my production keyboard correctly installed? They feel hot."

: The standard filename used by most modern tools and emulators (like the now-defunct Yuzu).

Keys are bound to system firmware versions. If you are attempting to process a game released for a modern firmware version using keys extracted from an older firmware setup, the compilation will fail. Ensure that you dump the latest keys from your console using a tool like Lockpick_RCM to keep pace with game encryption changes. 4. Remove Special Characters from File Names