ZyXEL Communications AMG1312-T Series User Manual page 206

Chapter 23 Firmware Upgrade
Figure 113 Firmware Uploading
The AMG1312-T Series automatically restarts in this time causing a temporary network disconnect.
In some operating systems, you may see the following icon on your desktop.
Figure 114 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 Firmware
Upgrade screen.
Figure 115 Error Message
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AMG1312-T Series User's Guide