You are downloading the 500 Backgrounds XAP file v220.127.116.11 for Windows Phone. 500 Backgrounds is a free and useful Photo & Video app: Why have just a background? With 500 Backgrounds, you can have the best backgrounds from the best photography community on the ... You can now download the offline XAP file to install & try it.
Download Locations for 500 Backgrounds 18.104.22.168 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline 500 Backgrounds XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.