Synology NAS Firmware up from old DSM 2.3-1139 to latest available DSM 4.2

Gordon Tin
Gordon Tin used Ask the Experts™
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Dear All

I have never upgraded synology NAS before, so I would like to ask before I go ahead to upgrade.
I would like to upgrade to latest DSM 4.2 from 2.3. Is it possible?

If it is not possible, what firmware in between should I upgrade to??
Generally, I would like to double confirm that my data (files) are safe during & after upgrade.

Thank you in advance for your help.
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IT Manager
Top Expert 2010
Commented:
Are your NAS a DS209+?

The YouTube video in the link below is a tutorial for Synology DSM update.

https://youtu.be/2aR5JdOsEGs

What you need to check is whether the DSM update will break the installed app inside your control panel.
Gordon TinIT Manager

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