: Always install the base game ( .nsp or .xci ) before installing the v1.0.1 update file. For Emulator Users (Yuzu / Ryujinx) If you are playing via PC emulation software: Open your emulator menu. Navigate to File > Install Files to NAND . Select the extracted 1.0.1 NSP update file.
: This stands for Nintendo Submission Package. It is the official format used for digital software, downloadable content (DLC), and game updates on the Switch ecosystem. Batman-Arkham-City-NSP-Update-1.0.1-ROMSLAB.rar
Based on the filename and technical context, here is a breakdown of what this file represents and the risks associated with it: Technical Breakdown Batman-Arkham-City : Refers to the second entry in the : Always install the base game (