According to Nintendo’s official patch notes, version 1.0.3 includes:
: General fixes to enhance the overall gameplay experience and prevent crashes. Miitopia -NSP--Update 1.0.3- -2-.rar
: After installation, the game's version number on the home screen (viewed by pressing the button) should reflect version 1.0.3. Important Safety and Legal Notes Source Caution According to Nintendo’s official patch notes, version 1
Are you encountering a when trying to open or install it? According to Nintendo’s official patch notes
: Digital game data (NSP) used for installing the game or its updates on a Nintendo Switch system.
“Would you like to replace existing files?” the prompt asked.