You are downloading the VBA8 XAP file v220.127.116.11 for Windows Phone. VBA8 is a free Entertainment App: VBA8 is a Gameboy Advance emulator that allows you to play and store Gameboy Advance games on your phone. The app includes a free ... You can now download the offline XAP package file to install & try it.
Download Locations for VBA8 18.104.22.168 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline VBA8 XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.