Last Updated on January 13, 2026 by writer
Learn how to set up prod.keys, title.keys, and firmware version 21.2.0 for the Sumi Emulator. Improve compatibility and performance for Nintendo Switch games on Android, Windows, and Linux.
Sumi Emulator is an emerging, high-performance Nintendo Switch emulator built on Citron—a Yuzu-based fork. Optimized for Android, Windows, and Linux, it enables users to play Switch games and homebrew with impressive performance. However, to unlock its full capabilities, users must configure prod.keys, title.keys, and firmware correctly.
This guide explains what each of these components is, why they’re important, and how to install them in Sumi Emulator safely and effectively.
Sumi Emulator Prod Keys
| Prod Keys & Title Keys | 100% Working Keys |
| V21.0.1 (NEW) | DOWNLOAD |
| V21.0.0 (NEW) | DOWNLOAD |
| V20.5.0 (NEW) | DOWNLOAD |
| V20.4.0 (NEW) | DOWNLOAD |
| V20.3.0 (NEW) | Download |
| V20.2.0 | Download |
| V20.1.5 | DOWNLOAD |
| V20.1.1 | DOWNLOAD |
| V20.0.1 | DOWNLOAD |
| V20.0.0 | DOWNLOAD |
| V19.0.1 | DOWNLOAD |
| V19.0.0 | DOWNLOAD |
| V18.1.0 | Download |
| V18.0.1 | Download |
| V18.0.0 | GET LINK |
| V17.0.0 | Get Link |
| V16.0.3 | Get Link |
| V16.1.0 | Get Link |
Sumi Emulator Firmwares
| Firmwares Version | Download Links |
| V21.2.0 (NEW) | DOWNLOAD |
| V21.1.0 (NEW) | DOWNLOAD |
| V21.0.1 (NEW) | DOWNLOAD |
| V21.0.0 (NEW) | DOWNLOAD |
| V20.5.0 (NEW) | DOWNLOAD |
| V20.4.0 (NEW) | DOWNLOAD |
| V20.3.0 (NEW) | DOWNLOAD |
| V20.2.0 | DOWNLOAD |
| V20.1.5 | DOWNLOAD |
| V20.1.1 | DOWNLOAD |
| V20.1.0 | DOWNLOAD |
| V20.0.1 | DOWNLOAD |
| V20.0.0 | DOWNLOAD |
| V19.0.1 | DOWNLOAD |
| V19.0.0 | DOWNLOAD |
| V18.1.0 | DOWNLOAD |
| V18.0.0 | Download |
| V17.0.0 | Download |
| V16.1.0 | Download |
| V16.0.3 | Download |
Related: Best Nintendo Switch Emulators for All Devices
Best Nintendo Switch Games For Sumi Emulator– NSP & XCI ROMs (Top Switch ROMs Collection)
| S.N | Nintendo Switch Game | ROM Format | Category |
|---|---|---|---|
| 1 | Pokémon Legends: Arceus | Pokémon Legends: Arceus NSP / XCI | Action RPG |
| 2 | Mario Kart 8 Deluxe | Mario Kart 8 Deluxe NSP / XCI | Racing |
| 3 | NARUTO SHIPPUDEN: Ultimate Ninja STORM 3 Full Burst | NARUTO SHIPPUDEN: Ultimate Ninja STORM 3 Full Burst NSP / XCI | Fighting |
| 4 | Pokémon Brilliant Diamond | Pokémon Brilliant Diamond NSP / XCI | RPG |
| 5 | EA SPORTS FC 26 | EA SPORTS FC 26 NSP / XCI | Sports |
| 6 | JoJo’s Bizarre Adventure: All-Star Battle R Deluxe Edition | JoJo’s Bizarre Adventure: All-Star Battle R Deluxe Edition NSP / XCI | Fighting |
| 7 | Super Mario Galaxy | Super Mario Galaxy NSP / XCI | Platformer |
| 8 | Mario & Luigi: Brothership | Mario & Luigi: Brothership NSP / XCI | RPG |
| 9 | The Legend of Zelda: Tears of the Kingdom | The Legend of Zelda: Tears of the Kingdom NSP / XCI | Action-Adventure |
| 10 | Hollow Knight: Silksong | Hollow Knight: Silksong NSP / XCI | Metroidvania |
Nintendo Switch ROMs include popular Switch games packaged as NSP ROMs and XCI ROMs. NSP files are eShop-style digital installs, while XCI files are cartridge dumps—both require valid Nintendo Switch prod keys and compatible firmware files to run correctly on Switch emulators or CFW consoles.
To use NSP/XCI ROMs, first install the latest prod.keys and title.keys in your emulator (Yuzu, Ryujinx, Eden, Egg NS). Then add the matching Switch firmware to decrypt and boot games. NSP files are installed via the emulator’s install option, while XCI files can be loaded directly. With correct keys and firmware, Switch ROMs run with proper graphics, updates, and DLC support.
What Are prod.keys, title.keys & Firmware?
1. prod.keys
- Purpose: Contains decryption keys for Nintendo Switch game content.
- Source: Legally extracted from your own Nintendo Switch using
Lockpick_RCM. - Importance in Sumi: Required to decrypt and run most commercial games.
2. title.keys
- Purpose: Helps decrypt individual game titles (DLCs, updates).
- Optional: Not always needed unless you run specific encrypted content.
- Compatibility: Fully supported by Sumi as it shares the same decryption engine as Yuzu and Citron.
3. Firmware
- Purpose: Contains official Nintendo Switch system files.
- Functions Enabled:
- Controller compatibility
- In-game applets
- System services like audio and keyboard
- Essential: Required for running certain titles and improving stability.
Where to Place Keys and Firmware in Sumi Emulator
For Android:
Place the files in:
swiftCopyEdit/Android/data/org.ovsky.sumi/files/switch/
prod.keys→/switch/prod.keystitle.keys→/switch/title.keys(optional)- Firmware →
/switch/firmware/
For Windows/Linux/macOS:
The structure is typically:
cppCopyEditsumi/
├── switch/
│ ├── prod.keys
│ ├── title.keys
│ └── firmware/
Use the built-in Sumi interface to verify or manually assign the keys and firmware path in Settings.
How to Dump Keys & Firmware Legally
⚠️ Disclaimer: Downloading keys or firmware from the internet is illegal and violates Nintendo’s copyright. Always dump from your own Switch.
Tools You Need:
- Lockpick_RCM (for prod.keys and title.keys)
- TegraExplorer or Fusée (for firmware)
- Atmosphère (custom firmware to run the tools)
Steps:
- Boot into RCM mode using a jig.
- Launch Lockpick_RCM via Hekate.
- Save
prod.keysandtitle.keysto your SD card. - Run TegraExplorer to dump firmware files.
- Transfer all files to your PC or Android device and place them in the appropriate folders.
Common Issues & Fixes
| Issue | Solution |
|---|---|
| “Missing prod.keys” error | Ensure file is placed correctly and updated (use latest Lockpick) |
| Game crashes on startup | Verify firmware is installed and matches the required game version |
| Stuck on loading screen | Reinstall firmware and double-check key files |
| Controller not working | Requires firmware for controller profiles to load |
FAQs About Sumi Emulator Keys & Firmware
Q1: Can I use Yuzu’s prod.keys in Sumi Emulator?
Yes. Sumi supports the same key format as Yuzu, Sudachi, and Citron.
Q2: Do I need title.keys for every game?
No. Only a few games or DLCs require them. Most titles work with just prod.keys.
Q3: How often should I update the keys and firmware?
Every time you update your physical Switch or encounter a game that requires newer decryption support.
Q4: What firmware version is best for Sumi?
The most recent stable Nintendo Switch firmware (v20.4.0+ as of 2025) is recommended for maximum compatibility.
Q5: Is it safe to use Sumi on Android?
Yes, the app is optimized for Android devices and can outperform older emulators like Sudachi in many titles.
Conclusion
Setting up prod.keys, title.keys, and firmware is essential for unlocking the full potential of Sumi Emulator. These files allow decryption of Switch games, improve compatibility, and enable critical system functions.
While Sumi stands out for its mobile optimization and performance gains over Sudachi and Citron, it still relies on the same foundation: accurate and legally sourced decryption files. By following this guide, you’ll ensure a smoother, safer, and more stable emulation experience.