Tools like Wii U Downloader or JNUSTool allow users to download content directly from Nintendo's servers to a PC for backup or decryption.
All digital purchases are pulled from the NUS once a valid ticket (license) is confirmed. wii u nus
Over the years, three tools have dominated this space. Each has a different level of complexity and safety. Tools like Wii U Downloader or JNUSTool allow
V10lator/NUSspli: NUS simple packet loader/installer - GitHub wii u nus