Download the Super Mario Odyssey Base NSP and Update v1.3.0 NSP to your computer. Step 2: Launch Atmosphere CFW on your Switch. Step 3: Open the Homebrew Launcher (usually by holding R and launching a game). Step 4: Launch Tinfoil . Step 5: Navigate to the File Browser tab. Select "USB Install" . Step 6: On your PC, install a driver (if first time) using Zadig for libusbK. Step 7: Open NS-USBloader (PC program) or TinWoo Installer . Step 8: Drag and drop both the Base NSP and the Update NSP into the queue. Step 9: Click "Send to USB." Step 10: On the Switch, select the files and choose "Install." Result: The software will install the base game, then immediately overwrite necessary files with the update.