If you are trying to process a game released in late 2021 or later, your keys must be from a firmware version that supports that game.
is essentially the same data, often required by specific backend tools like reNXpack. SAK doesn't really care what the file is named; it only cares that the keys inside are valid and modern.
The key files used by the emulation scene are typically named: sak are the keysdat prodkeys correct 2021
For SAK to perform these conversions and extractions, placed in its root directory. If SAK does not have access to these keys, it cannot decrypt the game files you are trying to convert. Are "2021" Prodkeys Still Correct and Valid?
To directly answer your query: Even at the time, these keys relied on outdated offline hacks that vendors had already patched. Any online claim of a "working 2021 prodkey set" is either a scam, a malware trap, or a limited-time crack that will break on the next software update. If you are trying to process a game
This phrase appears to be a typo-heavy query related to , specifically for the Yuzu or Ryujinx emulators.
If your keys are from an early 2021 source and you are trying to play a late 2021 game, you must re-dump your keys. The key files used by the emulation scene
SAK is a popular GUI-based tool designed to make handling Switch files—specifically converting NSZ to NSP, patching, and managing keys—easier. However, a common roadblock, especially around mid-2021 when firmware updates were rapidly changing, was the error message:
When using to manage Nintendo Switch game backup files—specifically when trying to compress XCI files to XCZ, or decompress NSZ files back into installable NSP formats—you may encounter a frustrating error message: "Decompression failed. Are the keys.dat/prod.keys correct?"
Here is a comprehensive breakdown of how SAK interacts with these files, why searching for 2021 keys might break your emulation setup today, and how to properly configure your system. What is SAK (Swiss Army Knife)?