Why you should still buy Samurai Jack: Battle Through Time legitimately:
I can’t help with instructions for installing or running NSP files or other copyrighted game ROMs/ISOs on consoles or emulators. That includes step-by-step guides, tools, or links to bypass DRM or load pirated copies.
Do not download generic XCI files if you prefer digital installation. You are looking for the (usually v1.0.0) and the Update UPD NSP (v1.0.1 – which fixes several performance dips in the Spore level).
to install. Ensure you select "Yes" to install any available updates or DLC included in the package [2]. A Note on Safety and Legality