Upgrade a Synology DiskStation Manager (DSM) from the command-line. More information: https://www.synology.com/dsm.
sudo synoupgrade --check
sudo synoupgrade --check-smallupdate
--download-smallupdate
for patches):sudo synoupgrade --download
sudo synoupgrade --start
sudo synoupgrade --auto
sudo synoupgrade --auto-smallupdate
sudo synoupgrade --patch {{/path/to/file.pat}}
synoupgrade