You are downloading the InstaDown AppX file v18.104.22.168 for Windows Phone. InstaDown is a free and useful Social app: InstaDown it's an application that allows you to download media content from the Instagram.You can easily download media from instagram: 1- ... You can now download the offline AppX file to install & try it.
Download Locations for InstaDown 22.214.171.124 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline InstaDown AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.