Administrators can selectively upgrade specific devices in order to install firmware upgrades or hotfix within their environment.
To update the firmware
Navigate to the Settings > Firmware page.
In the Access Points tab, if there is an upgrade available for any of the devices then there will be an icon displayed in the version column as shown below.
For the device with an upgrade available, click on upgrade icon in the Upgrade column to bring up the upgrade devices pop-up.
Click on Upgrade button in the pop-up to upgrade the selected device.