There is a 5.4.1.0 version of the EYEONET DVR, but it's not available for public. You will have to register as a dealer or log-in on the member;s area in order to download the latest update to the application.
"These manuals and software are available to our dealers only. If you are existing dealer, please log in here. If you are not yet, please register as a new dealer. Someone will contact with you shortly" - Eyeonet website.
Login URL: https://www.eyeonet.com/login?rd=/support/manualDownload
Note: if you don't have an account, register for one using the form on the page linked above.