Push and poll
Last updated August 31st, 2026
This section describes various procedures for pushing a campaign to devices and polling the server for updates.
Push a campaign update to a device through the Campaign tab
This procedure is useful if you want to update an existing campaign and update devices accordingly.
- In Campaign, click on an existing campaign.
- Update the campaign details as needed.
- Click Push Update.
Force a Knox E-FOTA client app refresh
If you want to ensure certain devices are receiving the latest Knox E-FOTA information, you can send a Force client refresh command to manually update. This feature is available for all devices with the Knox E-FOTA client installed, including those part of EMM groups.
To force a client refresh:
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In the Devices tab or on the details page of an EMM group, select the devices you want to force a client refresh for.
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Select ACTIONS > Force client refresh.
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A pop-up is shown, asking you to confirm whether you want to perform the Knox E-FOTA client update and sync the latest campaign information. Click Force refresh.
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A toast notification is shown confirming that the command was sent to the selected devices.
If the command is sent successfully, the following happens on the selected devices:
- The current campaign info is deleted.
- The Knox E-FOTA client app is updated to the latest version.
- The latest campaign info is synced and the campaign is restarted.
Poll the server for device updates
Once a new campaign is active and a device is assigned to it, the Knox E-FOTA client app polls the Knox E-FOTA server every 24 hours to check for the latest available update. When a device user restarts their device, it automatically restarts polling. The device user can also manually poll the server for campaign updates.
- On the device, launch the Knox E-FOTA client app.
- Tap Check for a software update.

- Tap Download now if the device meets the requirements.

- To install, tap Install now.

The firmware update is downloaded and installed.
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