Network Accessible Storage (NAS) units run on various versions of Linux systems (distros) and as they are (limited) operating systems they need updating too.
The latest of the DSM versions issued by Synology are designed to augment features and patch weaknesses. The updates usually take less than 10 minutes to install, and are normally delivered to the public internet mid-month.
Synology have a suite of apps for all types of media - photos, videos, music and security footage.
Please ask one of the friendly Groupsupport staff about how they can help you with your NAS box updates.