Your Switch must be running Atmosphere or similar firmware.
To help look into any issues you are facing, could you share a bit more context? sonic superstars 01008f701c074000v0usnsp install
If you have a hacked Switch with Atmosphere CFW, you can install Sonic Superstars using specific tools. Your Switch must be running Atmosphere or similar firmware
Before you proceed with any installation, you must understand the risks: sonic superstars 01008f701c074000v0usnsp install
If your installer cannot read the NSP, it usually means your prod.keys file is outdated. Use a tool like Lockpick_RCM on your console to dump the latest keys from your firmware.