How to download source code for Fiori Launch Page

I am trying to customize Launch Page. I am able to customize to some extent using UI5 Theme Designer. I am wondering if I can download the source code for the Launch Page. I tried to follow steps mentioned at,

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/80649c2f-3bfc-3010-0da6-ae101dceafea?QuickLink=index&overridelayout=true&58652073497290

The system shows 'Download Finished' message, but when I check the destination folder, the folder is empty. Is there any other method for the download of the source code for Launch Page?