Check the file size. For 1.0.3, the NSP should be exactly 329.12 MB (345,145,344 bytes). If it is smaller, your download is incomplete.
Addressing minor glitches reported in the initial release. miitopia nspupdate 103 2rar exclusive
Explain that .nsp is the standard format for Switch digital titles and updates, while .rar is simply the compressed folder used to transport the file. Check the file size
You can update your game through official channels or manual file installation if using custom firmware. Official Method: Connect your console to the on the Miitopia icon on the HOME menu. Software Update Via the Internet Manual Installation (NSP/CFW): If you have an NSP update file (often found in archives on community sites), you must follow these steps: Extract the File: Use a tool like to extract the file from the archive. Place the NSP file on your Switch's SD card (usually in an Use an homebrew installer like Awoo Installer to select the NSP and "Install to NAND" or "Install to SD". Important Security Note: Addressing minor glitches reported in the initial release