: You must have the latest signature patches installed on your SD card, or the console will refuse to launch the "unofficial" NSP.
These tutorials provide step-by-step visual guides on installing and patching applications for a modified Nintendo Switch: INSTALL & RUN YOUTUBE ON CFW SWITCH 25K views · 4 years ago YouTube · Dr Brute youtube patched nsp install
Launch your Switch using the payload launcher (TegraRcmGUI on PC, Rekado on Android). Boot into (Emulated NAND) if you have one. Never install patched NSPs on sysNAND if you care about online play. : You must have the latest signature patches