After running Lockpick_RCM, navigate to the /switch/ folder on your SD card. You should find:
: Update your Nintendo Switch console to the latest official firmware, update your CFW (Atmosphère), and re-run Lockpick_RCM to dump an updated prod.keys file. Error: "File falls outside of safe limits / Corrupted file" nsc builder keys.txt
You need to obtain a prod.keys file. You can create this by dumping the keys from your own console using tools like Lockpick_RCM. After running Lockpick_RCM, navigate to the /switch/ folder
. Without configuring this specific file inside the program's directory, the underlying extraction tool (hactool) cannot execute any core functions. This renders the entire software package unusable. You can create this by dumping the keys
A properly formatted keys.txt file consists of hexadecimal key-value pairs. Each line represents a specific key required for a different layer of system or game encryption. The structure must look exactly like this:
The program operates by reading cryptographic keys from the Switch console itself. Without these keys, NSC Builder cannot decrypt game metadata, verify signatures, or repackage titles correctly. This is where the keys.txt file enters the picture.
即使配置了 keys.txt ，新手也常常会遇到各种问题。以下是几种最常见的错误及其解决方法：