If a conversion fails, it usually means your prod.keys file is outdated and cannot decrypt a newer game update. Re-dump your keys using your Switch.
A popular tool for merging NSPs, updates, and DLC into a single XCI.
: Windows is the standard, though some tools run on Linux via Python or Wine.
This format is a direct dump or emulation of a physical Nintendo Switch game cartridge. XCI files are generally used with custom firmware (CFW) game launchers that emulate inserting a physical cartridge into the console. Why Convert NSP to XCI?
Nintendo Switch games range from 500 MB to over 30 GB. Uploading a 15 GB NSP file to a web server, waiting for a remote script to convert it, and downloading a 15 GB XCI file back would take hours—even on high-speed fiber internet. 2. Encryption Keys and Security
This format mimics official digital downloads from the Nintendo eShop. It is typically used for base games, updates, and downloadable content (DLC). NSP files are installed directly to the console's internal storage or SD card.
I can provide the exact download links or command lines tailored to your specific setup. Share public link
Download the latest Switch Army Knife (SAK) from GitHub.
Since local conversion is the standard, here is a step-by-step guide to safely converting your files using . Prerequisites A Windows PC.
Click the "Convert" button or let the command prompt process the data. The tool decrypts the NSP assets and repacks them into a standard XCI structure.
It can merge base games (NSP) with updates and DLC into a single XCI file. Availability: Open-source on GitHub . Switch Army Knife (SAK)
: A popular Windows GUI-based tool that simplifies the process of converting between formats and patching files.
However, The tools and methods described in this article are intended for users who have legally purchased their games and wish to preserve or convert their personal backups. The article does not condone the use of these tools for copyright infringement.
NSP and XCI files are often several gigabytes in size. Uploading and downloading such large files for conversion is impractical for web browsers.
A direct copy of a physical game cartridge.