Nov 21, 2018
May 29, 2015 Download Windows Phone 8.1 Mobile Device Management Windows Phone 8.1 Update and Emulators The Windows Phone 8.1 Update Emulators package adds additional emulator images to an existing installation of Visual Studio 2015 or Visual Studio 2013 Update 2 or later. With this update installed, you can create and test apps that will run on devices that have Windows Phone 8.1 Update. Windows Phone - Microsoft Download Center
Jun 21, 2017
May 14, 2020 Windows Phone 8.1 now available to download - The Verge Apr 14, 2014 Windows SDK archive - Windows app development
Topic: windows phone 8.1 articles on Engadget
Apr 14, 2014