The Network OS Update page provides a central location for updating the Oracle SD-WAN Edge Operating System (OS) over your network. You can select one or more OS images to upload and apply to all appliances at once or to selected,individual appliances. The GUI displays a graphical, step-by-step work flow that leads you through the process.

1. Log on to the SD-WAN Controller and navigate to Manage Network, Network OS Update.
   The centralized OS update web application fetches OS information for all SD-WAN sites in your network and populates the Application OS Status table with all the SD-WAN devices in your network.

   Note:

   Each time the system loads a section of the Centralized OS Upgrade application, the spinner indicates that the fetching operation is in progress. Wait for the spinner to stop before performing any operation.
2. On the Network OS Update page, in the Network OS Overview section, click Begin.
   The GUI displays the Upload and Transfer page.
3. On the Upload and Transfer page, click Select Image to select an image file and then click Upload to start the upload process. Repeat to upload the image file for each model that you want to update.
   The system adds each uploaded image to the OS Images drop-down list.

   Note:

   You do not need to upload all available images unless you want to update all SD-WAN models in your network. You can upload only the images you need, for example to update a specific model.
4. On the Upload and Transfer page, do the following:
   • Select all the OS Images you want.
   • Select all the sites you want to update.
   • Click Transfer.

   The page displays a progress bar followed by a success confirmation dialog.
5. On the file transfer success dialog, do one of the following:
   • Click OK to stay on the File Transfer page, for example, to transfer more files.
   • Click Next to advance to the next Install page.

   When you click Next, the GUI displays the Install page with the transferred OS image files listed per site.
6. On the Install page, select one or more sites on the Appliance OS Status table and click Install to install the transferred OS image files to the Backup partition of the selected sites.
   The GUI displays a progress bar followed by a success confirmation dialog.
7. On the Install success dialog, do one of the following:
   • Click OK to stay on the Install page, for example, to perform more installations.
   • Click Next to advance to the next section.

   The GUI displays the Switch Over page with the new images listed in the Backup OS column.

   Note:

   The Transferred OS column shows "No OS Image Available" for the sites where you installed the new image because the SD-WAN no longer needs to store the transferred image file.
8. On the Switchover page, select one or more sites from the Appliance OS Status table and click Switch OS to switch the Backup to Active.
   The GUI displays a progress bar followed by a success confirmation dialog.
9. On the Switch Over success dialog, click Next.
   The GUI displays the Reboot page.

   Note:

   In the Backup OS column, the images with an asterisk will become the Active ones after the reboot.
10. On the Reboot page, select one or more sites from the Appliance OS Status table and click Reboot.
    The GUI displays a 180 second timer, which is approximately the time needed to reboot the SD-WAN appliance.
11. Click OK and wait for the reboot to complete.

    Note:

    During the reboot, you cannot access the GUI for the selected sites. You may need to refresh to see the GUI when the reboot completes.
12. (Optional)—When the sites finish rebooting, you can go to the SD-WAN Controller, Manage Network, Network OS Update to verify the OS Completion Status. See the Active OS column in the Appliance OS Status table and confirm the updated image version for the sites you updated.