Using your Zyxel C1000Z modem

NOTE:  This modem will be retired soon. The information below may help you use and troubleshoot this device, but for an optimized internet connection, it's time to upgrade! Contact us to purchase or lease an upgraded modem.  Learn more >
Features of the Zyxel C1000Z

WiFi supported:

  • 2.4 GHz: 802.11 b/g/n

IP compatibility: IPv4, IPv6

Click to open compatibility details

Top Modem Troubleshooting Tips

  • Did you know?  If your internet connection is spotty or slow, the best place to start is rebooting your modem.
  • Still not running right? Check to see if you need to update the modem's firmware. You can also download the current firmware using the link below. 
Chrome users, right click on the firmware link and choose "Open link in a new tab."

IMPORTANT NOTE: The C1000Z modem requires a two-step firmware upgrade.

  1. Restore the C1000Z to factory defaults via the GUI or reset button
  2. Reconfigure the PPP credentials and wireless settings
  3. Upgrade to the "Stepping Firmware" of CZC001- (click to download)
  4. Upgrade to CZC002- (click to download)
Modem setup
WiFi setup
Modem status
Advanced options and utilities
Was this article helpful?
CenturyLink Product Support