You can merge a base game (NSP) with its latest update and all DLC into one single XCI file for easier management.
Place your prod.keys file into the designated z_tools folder inside the NSC_Builder directory. This allows the program to decrypt and re-encrypt the game assets properly.
This guide is for educational purposes and homebrew development only. Do not upload or distribute converted files. Nsp To Xci Converter Online
The most reputable tools are locally run Python scripts or batch files, such as NSC_Builder .
Converting and modification of Switch files requires specific cryptographic keys (specifically prod.keys ) extracted from a physical Switch console. Online tools rarely possess or handle these safely or legally. You can merge a base game (NSP) with
Because online tools are inefficient and unsafe, the standard practice relies on local, open-source desktop utilities. The most trusted tool for this process is or 4NXCI . Prerequisites
Most "online" tools in this niche actually function as local scripts or applications due to the heavy processing and large file sizes involved. A prominent example is the davFaithid NSP-to-XCI-Converter on , which is widely used for its ability to strip title rights encryption from files . Core Features & Functionality This guide is for educational purposes and homebrew
Place your prod.keys file into the program's root folder (or the specific folder designated by the software instructions). 3. Run the Conversion If you are using a GUI-based tool like SAK: Open the application. Select the option from the menu. Browse and select your target .nsp file. Click Convert and wait for the process to finish.
You must dump your own prod.keys from your Nintendo Switch using tools like Lockpick_RCM . Conclusion
This step-by-step guide is for informational and educational purposes only. It is assumed you are using it on backups of games you legally own. If you are new to the scene, starting with a GUI tool like SAK is often simpler than command-line applications like NSC_Builder.