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Update software for a Sensor

  • Published on Sep 24, 2026
  • 3 minute(s) read
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The Upgrade action enables an on-demand download of the latest or earlier software updates for a Sensor from your Manager. All the software versions, applicable to the device and available in the Manager are listed. From this, you can choose the version that you want to push to the device. These versions are the ones that you downloaded from the update server onto your Manager.

Note

You can only update online devices. Make sure it is discovered, initialized, and connected to the Manager.

Note

For example, if multiple versions, such as 10.1.1.4, 10.1.1.5, and 10.1.1.6 are available for download, Trellix recommends you download version 10.1.1.6. The latest version of software always contains the changes included in all previous releases. If necessary, you can also downgrade your Sensor by choosing from the list of available versions.

Note

After you update the software of a device, you must restart it.

Steps:

  1. For a standalone Sensor, click Devices → <Admin Domain Name> → Devices → <Device Name> → Maintenance → Deploy Device Software.

    For Sensors in a stack, select Devices → <Admin Domain Name> → Devices → <Device Name> → Member Sensors → <Stackname-node id> → Maintainance → Deploy Device Software.

    The Deploy Device Software page is displayed.

    In case of Sensors in fail-over pair, select a Sensor under the fail-over pair name node, and then select Upgrade.

    Note

    <Device Name> refers to name of the Sensor.

  2. Select the required version from the Software Ready for Installation section.

    Note

    The Software Ready for Installation section lists the applicable versions of software that you downloaded from the update server. (Manager → <Admin Domain Name> → Trellix IPS Protection Status. Select Device Software tab. The Device Software tab is displayed. Then, select Download Device Software option.)

  3. Click Upgrade.

    When a device is being updated, it continues to function using the software that was present earlier.

    Note

    The Manager reserves 100 GB under required free disk space for Manager operations and considers an additional file size of 1.2 GB to be generated for each software deployment request. Upon receiving the request (single or in bulk), it checks the number of Sensors selected, and calculates the free disk space. If there is insufficient free disk space, an error message is displayed in the UI stating the available disk space and the space required to complete the upgrade task. This enables the Manager to reserve sufficient disk space to keep other processes running and avoid any software upgrade failure scenario.

    Error message displayed for device software deployment if there is insufficient disk space
    Error message displayed for device software deployment if there is insufficient disk space


  4. After the update is complete, restart the Sensor.

    If the device that you updated is a Sensor in a fail-over pair, then update the other Sensor in the pair also to the same version. Note that both the Sensors of a fail-over pair need to be of the same software version.

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