If you’ve opened the Ryujinx emulator and hit a blank screen or a “keys not found” pop-up, you’re missing two files: prod.keys and the system firmware. This guide covers what they are, where to get them, and exactly how to install them so you can actually play.
What Ryujinx needs to run games
The Ryujinx emulator can’t read Nintendo Switch game files on its own. Every NSP and XCI file you download is encrypted, and without the right decryption keys, the emulator throws an error before the game even starts.
You need 3 things working together:
- Your game file (NSP or XCI format)
prod.keysandtitle.keys(the decryption keys)- System firmware (v22.1.0 as of this writing)
Miss any one of those, and the emulator either crashes or sits on a black screen. The fix is straightforward once you know where each piece goes.
Ryujinx prod keys and firmware v22.1.0
The current version as of May 2026 is v22.1.0. The prod keys file is tiny, around 8 KB as a ZIP. The firmware is much larger, at roughly 325 MB.
Both files need to match. If you have v22.1.0 firmware but v20.x keys, you’ll encounter decryption errors with newer games. Nintendo adds new encryption keys with each firmware release, so old keys can’t handle games that require newer system software.
| File | Version | Compressed Size |
|---|---|---|
| prod.keys | v22.1.0 | 8 KB |
| Firmware | v22.1.0 | 325 MB |
Download Ryujinx Prod Keys and Firmware v22.1.0
How to get Ryujinx keys legally
The only clean way to get prod keys is to dump them from a Nintendo Switch you own. Keys pulled from a real console are tied to that console’s encryption, which is what makes them valid.
Here’s the process:
You’ll need a hackable Switch. First-generation models manufactured before mid-2018 are typically vulnerable. Check your serial number against known vulnerability lists. Your console also needs custom firmware (CFW) like Atmosphère installed.
Install Lockpick_RCM. This is the standard homebrew tool for key dumping. Place the payload on your microSD card, boot into RCM mode (hold Volume Up, press Power with a jig in the right Joy-Con rail), and launch the payload from your PC over USB-C.
Run the dump. In Lockpick_RCM, choose to dump prod.keys and title.keys. The process takes under a minute. The files land in the /switch/ folder on your SD card.
Copy to PC. Remove the SD card, pull the key files, and put them in the Ryujinx system folder (path below).
Ryujinx prod keys location: where to put the files
This is where most people get stuck. Both prod.keys and title.keys Go into a folder called system inside the main Ryujinx data directory.
Ryujinx prod keys folder by OS:
Windows
C:\Users\[YourUsername]\AppData\Roaming\Ryujinx\system\The AppData folder is hidden by default. Press Win + R, type %appdata%, and hit enter. Then navigate to the Ryujinx folder from there.
Linux / macOS
~/.config/Ryujinx/system/Steam Deck (standard install)
/home/deck/.config/Ryujinx/system/Steam Deck (Flatpak/Discover Store)
~/.var/app/org.ryujinx.Ryujinx/config/Ryujinx/system/On Steam Deck, switch to Desktop Mode first and enable hidden files in Dolphin (Ctrl+H).
The quickest way on any platform: open the emulator, click File in the top menu, then Open Ryujinx Folder. This drops you directly into the right directory. Open the system folder inside it. If there’s no system folder yet, create one with that exact name.
How to install prod keys in Ryujinx
Step 1: Install the keys
- Open Ryujinx. If you see a “RYU-0001 Keys not found” error, click OK.
- Go to File > Open Ryujinx Folder.
- Open the
systemfolder, then the keys folder (create it if it’s missing). - Paste
prod.keysandtitle.keysdirectly into that folder. - Close and reopen the emulator.
Step 2: Install the firmware
The firmware file should stay zipped. Don’t extract it before installing.
- In the Ryujinx top menu, click Tools > Install Firmware.
- Select Install a firmware from XCI or ZIP.
- Navigate to your downloaded firmware ZIP, select it, and click Open.
- Confirm when prompted. Click Yes.
- Restart the emulator once the success message appears.
You’ll see the firmware version (22.1.0) displayed at the bottom of the Ryujinx window once it’s installed correctly.
Verifying your Ryujinx Prod keys setup
Go to Options > Settings > System tab. Scroll to the Keys section. You should see file paths listed for both prod.keys and title.keys. If either path is missing, the file isn’t in the right place.
The fastest real test: boot a game. If it loads without key errors, the Ryujinx prod keys setup is working.
Ryujinx vs Yuzu: Which one should you use now?
Both are effectively dead in their original forms. Yuzu settled with Nintendo in March 2024 for $2.4 million and shut down. Ryujinx followed in October 2024.
The active forks as of 2026:
- Ryubing: the main Ryujinx continuation, actively maintained
- Eden: the main Yuzu continuation, available on PC and Android
Performance between Ryubing and Eden varies by game. Some Ryujinx games that ran poorly on Yuzu (like Pokémon Scarlet/Violet at launch) ran better on Ryujinx’s GPU emulation. Others, especially games using the Tegra X1’s specific audio pipeline, performed better on Yuzu. The short version: try both if a specific game is giving you trouble.
For most people today, Ryubing (the Ryujinx fork) is a solid starting point. It carries the same compatibility list and uses the same prod.keys format.
Is Ryujinx no longer available?
This question comes up a lot. Ryujinx was shut down in October 2024 after Nintendo reached out directly to the lead developer, “gdkchan.” The developer took down the official GitHub repo, and the project went dark almost overnight.
The short answer: the original Ryujinx is gone. The official downloads are no longer hosted, and the team disbanded.
The longer answer: a fork called Ryubing picked up where it left off. Ryubing is an open-source continuation built by community developers, and it’s fully compatible with the same prod.keys and firmware files. When people today talk about downloading Ryujinx, they’re usually referring to Ryubing or a similar fork.
Why was Ryujinx shut down?
Nintendo sent a cease-and-desist to the lead developer. Unlike the Yuzu situation earlier that year (which ended with a $2.4 million settlement), the Ryujinx shutdown was quieter. The developer complied without a public legal fight. No lawsuit was filed publicly, and no settlement was announced.
Ryujinx keys not found: common fixes
The file is in the wrong folder. The most common issue. prod.keys needs to be in the system subfolder, not the root Ryujinx folder.
The file is named incorrectly. It must be prod.keys lowercase, with no extra text. Rename it if needed.
The keys are outdated. If you’re running firmware v22.1.0 but have v18. x keys, newer games won’t decrypt. Update the keys to match.
You have the keys but not the firmware. Both are required. Keys alone won’t get you past system initialization errors.
If you’ve checked all of the above and still see “Ryujinx emulator prod keys not found,” try navigating to the keys folder manually using the OS paths above rather than using the in-app file opener.
Frequently Asked Questions (FAQ)
Ryujinx itself never had an official Android release. The emulator was always PC-focused (Windows, macOS, Linux). If you’re looking to play Nintendo Switch games on Android, the actively developed options are Eden (a Yuzu-based fork) and Skyline for older, less demanding titles.
Some third-party sites claim to offer a “Ryujinx emulator Android” download, but there’s no legitimate version. Those downloads are worth avoiding.
Yes. Both are required. Prod.keys decrypt the game files, and firmware handles the system-level functions the emulator needs to boot those files. Missing either one causes errors before a game even starts.
Place prod.keys and title.keys inside the system folder in your Ryujinx data directory.
On Windows, that’s C:\Users\[YourName]\AppData\Roaming\Ryujinx\system\. On Linux and macOS, it’s ~/.config/Ryujinx/system/.
The quickest way to get there: open Ryujinx, click File > Open Ryujinx Folder, then open the system subfolder.
Yes. If your keys are from v20.x but your firmware is v22.1.0, newer games won’t decrypt correctly. Always update both together.
Conclusion
Ryujinx (or Ryubing, really) is in good shape for Switch emulation in 2026. The community maintained compatibility, and the setup process is the same as it was before the shutdown. Get the v22.1.0 keys and firmware, put them in the right folder, and you’re set.
