Why is my USG FLEX H not upgrading firmware automatically?

Zyxel_Emily

Question:
Why is my Zyxel USG FLEX H Series Firewall not upgrading firmware automatically, and what does the "ITS installed" message mean?

Answer:
The message "Please note that your new firmware download feature is disabled due to ITS installed." indicates that the automatic firmware download feature is unavailable because the USG FLEX H is using a date firmware.
To resolve this and ensure your USG FLEX H Series firewall is running the latest firmware, a manual firmware upgrade is typically required. Follow these steps:

Download the Latest Firmware:
Visit myZyxel.com.
Navigate to Device Management > Firmware Download.
Select your specific USG FLEX H Series model (e.g., USG FLEX 100H) and download the latest official firmware version.

Manually Upload the Firmware:
Access your USG FLEX H Series firewall via its web GUI.
Go to Maintenance > Firmware/File Manager > Firmware Management.
Upload the downloaded firmware file to your USG FLEX H Series device.