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1. Uninstall HappyCast app 2. Install the new Vivitek AirReceiver app Before you begin, ensure that the Qumi Q3 Plus is connected to a wireless network. Select WiFi on the Home Screen to connect to an access point. Step 1.1 To remove the HappyCast app, go to the Home Screen, click on ‘Setting’s and then ‘General’.
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Step 2.1 Go to the Home Screen, click ‘App Store’s and then ‘Search’. Step 2.2 Type in ‘Vivitek AirReceiver’ and click on the App icon. Step 2.3 Click on ‘Install’ on the top left, then again on the pop-up menu.