You are downloading the Backup My Band AppX file v184.108.40.206 for Windows Phone. Backup My Band is a free and useful Productivity app: Backup My Band is a Windows Phone app that enables you to backup your current Microsoft Band wallpaper and theme colours, and then restore them ... You can now download the offline AppX file to install & try it.
Download Locations for Backup My Band 220.127.116.11 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 Backup My Band AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.