We use cookies on our website to ensure we provide you with the best experience on our website. By using our website, you agree to the use of cookies for analytics and personalized content.This website uses cookies. More Information
It seems like your browser didn't download the required fonts. Please revise your security settings and try again.
Barracuda Load Balancer ADC

How to Update and Revert the Firmware

  • Last updated on

This article provides instructions on updating the firmware for standalone Barracuda Load Balancer ADCs.

If you want to update the firmware for two Barracuda Load Balancer ADCs configured in high availability cluster, see How to Update the Firmware on Clustered Systems.

On the ADVANCED > Firmware Update page, you can update or revert the firmware version of the Barracuda Load Balancer ADC. If offline updates are enabled, you can complete an offline firmware update.

Because the Barracuda Load Balancer ADC reboots during the firmware update, it is recommended that you update the firmware in a planned maintenance window.

Before You Update the Firmware

Before you update the firmware version of the Barracuda Load Balancer ADC, it is strongly recommended that you:

  • Go to the ADVANCED > Backups page and back up your current configuration.
  • Read all release notes that apply to versions that are more recent than the one currently running on your system. You can view the release notes on the ADVANCED > Firmware Update page. if you are performing an offline firmware update, the release notes appear after you upload the firmware update package with the steps in the Offline Firmware Update section below.

Online Firmware Update

To update the firmware for the Barracuda Load Balancer ADC:

  1. Go to the ADVANCED > Firmware Update page. 
  2. Compare the installed version in the Current Firmware Version section to the latest general release version available in the Firmware Download section. If you have the latest firmware version already installed, the  Download Now  button for the latest general release version is disabled.
  3. If there is a new Latest General Release available, click Download Now and allow the update to finish downloading.
  4. After the update is completely downloaded, click Apply Now.

Do not reboot or turn off the Barracuda Load Balancer ADC while the firmware is updating. The process can take several minutes to complete, depending on your configuration. After the firmware finishes updating, the Barracuda Load Balancer ADC automatically reboots and you are redirected to the login screen.

Offline Firmware Update

To update the firmware for the Barracuda Load Balancer ADC without Internet access, you must enable offline updates. You can then download the latest firmware package from your Barracuda Cloud Control account and upload the package to the Barracuda Load Balancer ADC.

  1. Contact Barracuda Networks Technical Support for a Feature Code to enable offline updates.
  2. Go to the Support > Downloads page in your Barracuda Cloud Control account, and download the latest firmware package.
  3. Log into the Barracuda Load Balancer ADC.
  4. Enable expert mode by appending the URL with: &expert=1
  5. Go to the ADVANCED > Offline Update page that appears and enable offline updates.
    1. Enter the Feature Code that you received from Barracuda Networks Technical Support, and then click Activate.
    2. When the Enable Offline Updates setting appears, select Yes.
    3. Click Save.
  6. Go to the ADVANCED > Firmware Update page. 
  7. In the Firmware Upload section, click Browse to navigate to and select the firmware package that you downloaded from your Barracuda Cloud Control account in step 2.
  8. Click Upload.
  9. After the firmware package is completely uploaded, click Apply Now.

Do not reboot or turn off the Barracuda Load Balancer ADC while the firmware is updating. The process can take several minutes to complete, depending on your configuration. After the firmware finishes updating, the Barracuda Load Balancer ADC automatically reboots and you are redirected to the login screen.

Firmware Revert

If you are reverting the firmware to a major release, the configuration that you had for that release version is loaded after the revert process completes.

You can revert the firmware to the previously installed version or to the factory installed version at any time. However, it is strongly recommended that you contact Barracuda Networks Technical Support before reverting the firmware.

To revert the firmware, go to the ADVANCED > Firmware Update page and revert to either the previously installed version or to the factory installed version in the Firmware Revert section. Do not reboot or turn off the Barracuda Load Balancer ADC while the firmware is reverting. The process can take several minutes to complete, depending on your configuration. After the firmware finishes reverting, the Barracuda Load Balancer ADC automatically reboots and you are redirected to the login screen.


Last updated on