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How to downgrade to a previous VMS version

Nx Support
Updated

Downgrading your Video Management System (VMS) is generally not recommended. However, if you experience issues after an upgrade, you can downgrade your system to a previous version.

Before every upgrade, the VMS automatically creates a database backup. To downgrade, you must back up this file, perform a clean installation of the target VMS version, and restore the database.

NOTE: Any changes made after the backup was created will be lost. You can only downgrade to a build that matches with copied database build number.

Step 1: Back up the database

Complete these steps for every server in your system before uninstalling the current VMS version.

  1. Stop the VMS Media Server service.

  2. Open the database backup directory for your operating system:

    • Windows: 
      C:\Windows\System32\config\systemprofile\AppData\Local\<VendorName>\<BrandName> mediaserver\backup

    • Linux: 
      /opt/<BrandName>/mediaserver/var/backup

  3. Locate the backup file created immediately before your recent upgrade. The filename follows one of these formats depending on how it was created:

    • ecs_<buildnumber>_<epochTimestamp>_timer.db

    • ecs_<buildnumber>_<epochTimestamp>_update.db

    • ecs_<buildnumber>_<epochTimestamp>_manual.db

  4. Copy the desired backup file to a safe location outside the installation directory.

Step 2: Reinstall the VMS

  1. Uninstall the current VMS version from all servers.

  2. Install the target VMS version on each server.

  3. Complete the initial setup. You can use any system name during setup, as the restoration process overwrites it.

  4. Stop the VMS Server service on all servers after installation finishes.

Step 3: Restore the database

Complete these steps for every server in your system.

  1. Navigate to the main server data directory:

    • Windows: C:\Windows\System32\config\systemprofile\AppData\Local\<VendorName>\<BrandName> mediaserver

    • Linux: /opt/<BrandName>/mediaserver/var

  2. Delete the existing ecs.sqlite file.

  3. Copy your saved backup file into this main server data directory.

  4. Rename the saved backup file to ecs.sqlite.

  5. Start the VMS Server service on all servers.

Step 4: Verify the system

  1. Open the VMS desktop client.

  2. Log in using your local administrator password or Cloud Owner account.

  3. Verify that your camera feeds, configurations, and system settings are accurate.

 

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