If you absolutely must sideload for educational or regional bypass purposes, only use IPAs from reputable open-source repositories (e.g., GitHub with transparent code), scan every file with a security tool, and never use your main Nintendo Account to log in.
Attempting to run the game on older iOS devices that no longer support the latest App Store updates. Installation and Sideloading Methods
To install an IPA file manually on your iPhone or iPad, you cannot simply download and open it. You must use a sideloading tool to sign the app with your Apple ID. Here are the most popular methods: Method 1: Using AltStore (Recommended)
Visit the campsites of real-life friends and give them "Kudos" or buy items from their Market Boxes. Installation Requirements Minimum OS: iOS 11.0 or later. Compatible Devices: iPhone, iPad, and iPod touch. Internet Connection: Constant data/Wi-Fi connection is required to play. Sideloading Tools: To install this file, you will need a tool such as Sideloadly , or a developer certificate. Disclaimer