ZyXEL Communications Nebula LTE3301-PLUS User Manual page 299

Chapter 34 Firmware Upgrade
After you see the module updating screen, wait about 20 minutes before logging into the Zyxel Device
again.
The Zyxel Device automatically restarts in this time causing a temporary network disconnect. In some
operating systems, you may see the following icon on your desktop.
Figure 197 Network Temporarily Disconnected
After two minutes, log in again and check your new firmware version in the Status screen.
If the upload was not successful, an error screen will appear. Click OK to go back to the Module
Upgrade screen.
Nebula Mobile Router User's Guide
299