synoupgrade

Check for available upgrades

$ sudo synoupgrade --check

$ sudo synoupgrade --check-smallupdate

$ sudo synoupgrade --download

$ sudo synoupgrade --start

$ sudo synoupgrade --auto

$ sudo synoupgrade --auto-smallupdate

$ sudo synoupgrade --patch [/path/to/file.pat]

$ synoupgrade

synoupgrade [-h]
synoupgrade [-p file.pat] [--no-reboot]
synoupgrade [--online | --online_download | --online_install]

synoupgrade is the firmware upgrade utility for Synology DiskStation Manager (DSM). It provides command-line control over the NAS operating system update process, enabling both manual upgrades from local patch files and automated online updates.
The tool handles DSM's proprietary .pat firmware packages and manages the complete upgrade workflow including download, verification, installation, and system reboot.

-h

Display help information

Upgrade from local patch file (absolute path required)

Prevent automatic reboot after upgrade

Check for available upgrades online

Check for patches without major version upgrade

Download latest upgrade

Download patches only

Start the upgrade process

Automatically upgrade to latest version

Automatically apply patches

Check online servers for updates

Download available updates

Install downloaded updates

Requires root privileges. SSH access must be enabled on the NAS. Only accepts Synology .pat firmware files. Interruption during upgrade can cause system corruption or data loss. Always backup critical data before upgrading. The system typically reboots after upgrade unless --no-reboot is specified.

synoupgrade is developed by Synology Inc. as part of DiskStation Manager. Synology NAS devices have been available since 2004, with DSM evolving as the primary operating system. The command-line upgrade tool complements the web-based Control Panel upgrade interface.

synopkg(8), synoservice(8)