The World's 50 Best Restaurants
master_key_00 , master_key_01 , etc. (used to decrypt software tied to specific firmware versions) header_key (used to read XCI cartridge headers)
Open your main NSC Builder directory. Locate the folder named ztools . Move or copy your newly renamed keys.txt file directly into this ztools folder. Step 3: Verify the Setup
Most versions include a keys_template.txt in that folder. You can fill it out or simply overwrite it with your own file. 2. How to Generate the Keys nsc builder keys.txt
The nsc builder keys.txt file is the cryptographic heart of NSC Builder. Without it, the tool is blind—able to read file structures but unable to decrypt, validate, or rebuild Nintendo Switch titles. By generating your own legitimate keys using Lockpick_RCM, you unlock the full potential of NSC Builder while staying (relatively) within the bounds of fair use and personal backup laws.
It is crucial to understand that . The tool explicitly requires this file to be present in its ztools directory. master_key_00 , master_key_01 , etc
Run the Lockpick_RCM payload on your console to dump your unique keys.
(Note: Some modified versions of NSC_Builder or related scripts may also check the root directory of the tool, but placing it in z_tools is the standard convention). Step 3: Verifying the Key Format Move or copy your newly renamed keys
Standard digital package format used for eShop titles, downloadable content (DLC), and software updates.
NSC Builder functions as a multi-purpose command-line and browser-interface utility designed for interacting with Nintendo Switch game packages. Developed by programmer julesontheroad using Python and Batch scripts, the software streamlines file operations for users running custom firmware or emulators.
Without a valid keys.txt file, NSC Builder cannot read the game files you drag and drop into it. You will likely encounter errors when trying to perform any action.