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Guardian
Maintenance Guide
Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
Software update and rollback
Do a software update from a shell console
You can do a software update from a shell console.

Guardian
- Introduction
  An overview of Guardian.
- Installation Guide
  Information and resources on how to install Guardian, and the different options and settings that are available.
- Administrator Guide
  Information and resources about the Administration section of Guardian, and the tasks that you can do in this part of the software.
- User Guide
  Information and resources about the main features of Guardian, and the tasks that you can do from the user interface (UI).
- Maintenance Guide
  Information about the maintenance tasks of Guardian, to help you administer and maintain the solution in a production environment.
  - Introduction
  - Backup and Restore
  - Reboot and Shutdown
  - Software update and rollback
    - Software updates and rollbacks
      You can update the Nozomi Networks software to a newer release, or roll it back to a previous release on physical or virtual sensors.
    - Do a software update from the web UI
      You can do a software update from the web UI.
    - Schedule a software update from the web UI
      You can schedule a software update from the web UI.
    - Do a software update from a shell console
      You can do a software update from a shell console.
    - Do a software rollback from a shell console
      You can do a software rollback from a shell console. This can only be done once because only the previously installed version of the software is available for rollback.
  - Reset
  - Miscellaneous
- Print format documentation
  A list of all the print-format documentation that is available for Guardian.

Do a software update from a shell console

You can do a software update from a shell console.

You have downloaded the applicable update bundle that you want to use for the update.

Open a shell console.
In the shell console, type cd and navigate to the directory where the .bundle file is located.
To copy the .bundle file to the sensor, enter the command:
```
scp VERSION-update.bundle admin@<sensor_ip>:/data/tmp
```
Note: You should refer to Release notes of the new version to follow the correct update path.

The update bundle uploads.
Enter the command:
```
ssh admin@<sensor_ip>
```
To go to privileged mode, enter this command:
```
enable-me
```
You can now perform system changes.
To start the installation of the new software, enter the command:
```
install_update /data/tmp/VERSION-update.bundle
```

The update process begins. The update may take several minutes to complete.