Avigilon ENVR2 Plus User Manual page 45

After the file is verified, the firmware upgrade automatically starts. The device will reboot several times
during the upgrade. The Web UI Communication Lost message appears while the device is rebooting.
When the device has rebooted, the connection to the Server Management page is restored in your
web browser.
Note: If an error occurs during the upload phase or the upgrade process or if the firmware
becomes corrupted, you are prompted to remove the file.
Upgrade the Firmware 38