You are downloading the Minecraft AppX file v0.1602.2.0 for Windows Phone. Minecraft is a free and fun Action & Adventure game: Our latest free update, The Boss Update, includes the Wither, ocean monuments, slash commands, and ADD-ONS. Learn more at minecraft.net/addons, where ... You can now download the offline AppX file to install & try it.
Download Locations for Minecraft 0.1602.2.0 AppX file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Minecraft AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.