To build this software on a mac you need the following:

1. Xcode - download from the app store.
2. Agree to the Xcode Terms of Service. To do this open up terminal and enter sudo xcodebuild -license
3. Download QT Creator. Community edition works fine.
4. Open the v800_downloader.pro file in QT Creator, qmake build then run.
5. You can move the v800_downloader.app binary to your applications and then use it whenever you like!