DSM Version: 7.0.1-42218 Update 2 is available but at the time of this writing can only be manually installed for most people. If you wish to update go to control panel in DSM to look up the processor used in your NAS. For the Synology920+ this is the INTEL Celeron J4125.  A quick check on https://ark.intel.com/ shows: I'm interested in the code name "Gemini Lake" for that. With that info I can go to the download section at Synology https://archive.synology.com/download/Os/DSM/