If the game fails to launch after installation, ensure your Sigpatches are updated to match your current firmware and Atmosphère version.
Ensure your system firmware version is compatible with Update 1.2.1 (typically version 15.0.0 or higher is recommended for this specific update). SPLTOON3-(USA)-NSwTcH-NSP-Update121-Ziperto.rar
Do not attempt to play online or access the eShop while using CFW, as this will lead to a permanent console ban. If the game fails to launch after installation,