User`s guide

Synology DiskStation User's Guide
Based on DSM 4.1
166 Chapter 18: Perform Advanced Management Tasks
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 Download link to have the system download the latest DSM
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 or DSM Download Failed.
3 Click the desktop notification window to go to DSM Update.
4 Do any of the following:
 If DSM download completed, click Update now to start updating DSM immediately.
 If DSM download failed, click Retry to have the system download the latest DSM from Synology again.
To check for updates regularly:
1 Tick Check for update regularly.
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.
Troubleshooting
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 Technical Support.
To perform manual DSM update:
1 Visit Synology's Download Center to download the latest .pat update file to your local computer. Unzip the file
to get a .pat update file.
2 Click Manual DSM Update to enter Manual DSM Update Page.
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.
Troubleshooting
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 Technical Support.