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How to Change the Server Version (Automatic)

The Versions feature in the Raznar panel lets you install a specific Minecraft version with ease.

Before starting, know the difference in steps between Upgrade and Downgrade:

ATTENTION
  • UPGRADE (e.g. 1.20 -> 1.21): You only need to delete the old server.jar file. The world and plugin data should NOT be deleted.
  • DOWNGRADE (e.g. 1.21 -> 1.20): You MUST DELETE ALL DATA (especially the world folder), because a newer-version map will be corrupted if opened in an older version.

Step 1: Back Up Data​

Always back up before making major changes.

  1. Turn off the server (Stop).
  2. Go to the Files menu.
  3. Download or archive the important folders (world, plugins, server.properties).

Step 2: Preparing Files (Important)​

Clean up the files according to your goal:

OPTION A: If You're UPGRADING (Moving to a Newer Version)​

We just need to throw away the old "engine" so it can be replaced with a new one.

  1. Open the Files menu.
  2. Find and delete the server.jar file.
  3. (Optional) Delete the libraries or versions folders if present, so the system is truly clean.
  4. DO NOT DELETE the plugins folder. Leave the existing plugins; they'll try to adapt to the new version later (you may need to update plugins afterward).

OPTION B: If You're DOWNGRADING (Moving to an Older Version)​

Because the map structure is different, we have to start from scratch.

  1. In the Files menu, check all files and folders (Select All).
  2. Click the Delete button.

Step 3: The Versions Menu​

  1. Look at the sidebar menu on the left.

  2. Click the menu named Versions.

  3. You'll see a list of available Minecraft versions.

    Versions Menu in the Raznar Panel

Step 4: Choose and Install a Version​

  1. Find the version you want in the list (for example: 1.21.1).

  2. Click the Install / Download button (down-arrow icon) on the right.

  3. A confirmation pop-up will appear. Click the red Confirm button.

    Change Version Confirmation Pop-up

The panel will automatically download the new server file for you.

Step 5: Start the Server​

  1. Go back to the Console menu.
  2. Click Start.
  3. The server will start up with the new version.

Note: If some plugins error on startup, that's normal because some plugins may need to be updated to the latest version to be compatible with the new server version.