How to roll back from 7.2.1 to 7.2

How to roll back from 7.2.1 to 7.2 Update 3 without losing your data

Important Notes:

• If you use 2FA or Passwordless Sign-In you should temporarily disable them or you may not be able to login.
• Backup your important data and settings... just in case.

Steps to roll back from 7.2.1 to 7.2 Update 3

1. Via SSH edit /etc.defaults/VERSION to change these lines to match these values

   micro="0"
   buildnumber="64569"
   base="64569"
   productversion="7.2"
   

   

2. Download DSM "7.2-64570 (with Update 1)" for your Synology NAS model from here.

3. Do a Manual DSM Update to "7.2 with Update 1".

   • Go to "Control Panel > Update & Restore > Manual DSM Update".
   • Browse to the DSM .pat file you downloaded in step 2 and click Open then OK.
   • Note: During installation DSM will update itself to "7.2 Update 3".

4. Once the NAS has finished rebooting refresh the browser and login. It won't auto-refresh like normal.

   • You'll notice some things are currently broken because some packages are still 7.2.1 versions:
     • Storage Manager will be broken (because the DSM 7.2.1 Storage Manager package is still installed).
     • Some packages show in Package Manager as needing repair but they fail to repair.
     • Some default packages show in Package Manager as incompatible.

   

5. Click Repair All to repair packages that can repair.

6. Uninstall the remaining packages from Package Center that are shown as needing Repair (the ones that fail to repair).

   • You may have different unrepairable packages than the 2 I had:
     • Synology Photos
     • Synology Application Service

7. Uninstall incompatible default packages via SSH:

   • You can find the correct package names with synopkg list --name | sort
   • Note: SAN Manager is ScsiTarget
   • You may have different incompatible packages than the 4 I had:

     sudo synopkg uninstall StorageManager
     sudo synopkg uninstall QuickConnect
     sudo synopkg uninstall ScsiTarget
     sudo synopkg uninstall SecureSignIn
     

8. Re-install "7.2 with Update 1" again to install the correct default package versions.

   You can use Synology_DSM_reinstall or do the following:

   • Edit /etc/defaults/VERSION again to change these lines:

     buildnumber="64569"
     base="64569"
     

   • Do a Manual DSM Update to "7.2 with Update 1" again the same as step 3.

9. Install any packages you uninstalled in step 6:

   • I only had these 2 packages. You may have different packages.
     • Synology Photos
     • Synology Application Service