Why the AP firmware version would be shown on the firewall?

Zyxel_Jeff

Background and Scenario:

Why when you check the log of the firewall and would see AP firmware related messages such as "AP firmware check successful. Available firmware: V6.50 Patch 1."

Answer:

Because Zyxel firewall supports AP controller feature, this message indicates that there is available firmware, V6.50 Patch 1, that can be updated on the managed AP.

You could manually update their managed APs' firmware by following this path: Configuration > Wireless > AP Management > AP Group > Group Summary > AP List > Upgrade.