Gemtek Systems WLTFQR-121 User Manual page 47

After pressing the "Upgrade" button, it will automatically reboot the
CPE and upgrade the firmware with the specified file. You will be
prompted to login to the CPE after the upgrade is complete.
Configuration Backup: Backup current system configuration by clicking "Save"
button; and then select the destination and save the file for further backup
requirement.
If you want to restore the system to previous configuration, click "Browse" button to
select the previous-saved configuration file, and then click "Restore" button to
restore the system to previous settings.
A Passphrase enter window will be popped up when save/restore the
configuration; be noted that the entered passphrases need to be
exactly the same to finish save/restore process.
LTE Indoor CPE | User Manual
File Download Window
Management > Software > Upgrading Window
P. 47