Do not download prod.keys . Dump your own from a console you own.
This is why official emulator projects like Ryujinx (which shut down after a settlement with Nintendo) and the now-defunct Yuzu included prod.keys with their downloads. They also could not provide links to get it. The emulator software itself is legal (reverse engineering for compatibility is often protected). But distributing decryption keys is not. prod.keys
In the world of console emulation and hardware modification, few files generate as much technical necessity and legal controversy as prod.keys . If you have ever tried to set up a Nintendo Switch emulator like Ryujinx or Yuzu (now discontinued), you have almost certainly run into a roadblock: the emulator asking for a missing prod.keys file. Do not download prod
By following this rule, you stay on the right side of the law, avoid malware, and respect the work of developers (both Nintendo's engineers and the emulator creators who refuse to facilitate piracy). Emulation is about preservation and playing your legally purchased games on better hardware. Treat prod.keys as the sensitive, private key it truly is. They also could not provide links to get it