How to Update Zyxel c1000z Firmware | Router Technical Support
Does CenturyLink automatically and periodically update the firmware in their ZyXEL C1100Z DSL wireless router that I rent, or should I do this myself from time to time? - Quora
ZyXEL NBG-415N Screenshot Firmware
Zyxel adds enhancements and two new firewalls to its USG FLEX family of mid-range firewalls for SMBs - Help Net Security
Hackers are exploiting a backdoor built into Zyxel devices. Are you patched? | Ars Technica