You are downloading the System Settings XAP file v188.8.131.52 for Windows Phone. System Settings is a free and useful Productivity app: System settings provides information about your phone, camera, screen and shortcut to access phone settingsGeneral phone information - Device ... You can now download the offline XAP file to install & try it.
Download Locations for System Settings 184.108.40.206 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP 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 System Settings XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.