According to official patch notes, the update was primarily to . The Power-Up Band is a wearable device from Super Nintendo World that functions as an amiibo.
While major updates added broader features, incremental updates like generally focused on back-end stability, correcting text localization bugs, and ensuring smooth interaction with the Nintendo Switch Online network for sharing Mii access keys. For players looking to mod their game or inject custom Mii libraries, having the correct update version that matches their mod framework is essential. Staying Safe in the Emulation and Modding Scene miitopia nspupdate 103 2rar exclusive