Synology removes old firmware from its main download page. You won’t find it at synology.com/en-us/support/download/DS3615xs . However, the file still exists in official archives.

supports read speeds over 2,200 MB/s and total raw storage up to 288TB using expansion units.

October 26, 2023 | Category: NAS / Homelab

You cannot install modern versions of Synology Drive, Active Backup, or even the latest Python. Most package repositories no longer serve binaries to DSM 5.2. You will see "Connection failed" or "Unsupported architecture" errors.

Before starting the upgrade process, ensure that:

The big question on everyone's mind is:

By following the information and guidelines provided in this article, you can ensure a successful upgrade process and unlock the full potential of your Synology NAS.