New WordPress Version has introduced new type of media library and uploading system. To meet the new features of WordPress all of our Themes have been updated for WordPress 3.5 Version. You can download and Overwrite the Themes on your existing installation. If you did any customization on Theme Files the customization will be overwritten. So be careful during overwritten. If you did styling via Theme Options no need to think for losing anything. Just overwrite the files without any hesitation.