Check Firmware Status - ZyXEL Communications ZyWALL 110 Handbook

The device checks the USB firmware with the running partition only. It does not check
the standby partition.
1 Check model ID:
If incompatible, the device deletes the firmware in the RAM.
If compatible, the device checks the firmware version.
2 Check firmware version:
If it is the same as the running firmware, the device deletes the firmware in the
RAM.
If it is not the same as the running version, the device starts to upgrade to the
standby partition.
Check Model ID and Firmware Version

Check Firmware Status

The device upgrades the standby partition and then reboots. After been upgraded to
the standby partition, the device automatically reboots to switch from running to
standby partition. The SYS LED starts to blink when the device begins to upgrade its
firmware until the rebooting process is completed.
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