Synology DiskStation User Manual page 167

To check if the latest DSM is available for download:
When you go to this page, the system will check with Synology Website for any updates. The check results
(shown in the Status field) might be any of the following:

Current DSM is the latest version.

The latest [DSM_VERSION] is ready for download.
To have the system download the latest DSM and perform the update:
1 If the latest DSM is ready for download, click the
for you.
2 The system will display any of the following desktop notifications to tell you whether the download is successful
or not: DSM Download Completed
3 Click the desktop notification window to go to
4 Do any of the following:
 If DSM download completed, click
 If DSM download failed, click
To check for updates regularly:
1 Tick Check for update
2 Click OK.
After you enable the function, the system will check for the latest DSM regularly, download it automatically, and
then display desktop notification when DSM download completes.
If you see error messages (in red text) during checking or downloading the latest DSM, the following
suggestions might help solve your problem:

Check if the upgrading process was interrupted by users, or other unexpected events, such as a power
failure.

Check the DSM version. You can only update the system with a newer DSM version.

Download the DSM update again because the update file might be corrupted.
If the problem remains, please contact Synology's
To perform manual DSM update:
1 Visit Synology's Download Center
to get a .pat update file.
2 Click Manual DSM Update
3 Click Browse to select the update file.
4 Click OK to start to update your DSM. The system will reboot automatically when the update completes.
If you cannot update DSM, the following suggestions might help solve your problem:

Check if the upgrading process was interrupted by users, or other unexpected events, such as a power
failure.

Check the DSM version. You can only update the system with a newer DSM version.

Download the DSM update again because the update file might be corrupted.
If the problem remains, please contact Synology's
167 Chapter 18: Perform Advanced Management Tasks
Download
or DSM Download
DSM Update.
Update now to start updating DSM immediately.
Retry to have the system download the latest DSM from Synology again.
regularly.
Troubleshooting
Technical
to download the latest .pat update file to your local computer. Unzip the file
to enter Manual DSM Update Page.
Troubleshooting
Technical
Synology DiskStation User's Guide
link to have the system download the latest DSM
Failed.
Support.
Support.
Based on DSM 4.1