please follow the steps to download the files:-
1. In that folder, go to the folder where you can see the files and two folders listed. Choose the files you want to download, except first two folder which contains the update and the full firmware. now click download icon in the top. it should give you second option which is normal download for a zip file contains all of your chosen file.
2. for downloading the 4.4 update file in the first folder, click on the folder and click the link for the file( make sure you choose that file only), now you can download that file.
3. for the full firmware, use the download link : www.mediafire.com/download/uzlq1g9oizof7x2/SPR-L720VPUEMK2-20131212171424.zip