Go to Settings > Update & Security > For developers and turn on Developer Mode .
Unlike .APPX files (which can sometimes be installed directly from File Explorer), .XAP files often require a PC-based deployment tool, such as the Windows Phone 8.1 Deployment Tool or SDK . opera mini xap for windows 10 mobile link
Since Windows 10 Mobile primarily uses .Appx files, installing older .Xap files requires a PC: Download the on your PC. Connect your phone via USB. Open the Application Deployment tool. Browse for your downloaded Opera Mini XAP and click Deploy . Step 3: Direct Installation (The Interop Way) Go to Settings > Update & Security >
: The app won't show a progress bar; it will eventually appear in your list under Recently Added PC Method (Deployment Tool) Connect your phone via USB
: One of its primary benefits was the data-saving proxy service; however, if Opera shuts down these specific legacy servers, the browser's main feature will cease to work. Opera forums