NBG6616
Simultaneous Dual-Band Wireless AC1200 Media Router

The ZyXEL NBG6616 router has Gigabit WiFi, 4 Gigabit ETH-ports and 0 USB-ports.
It's also known as the ZyXEL Simultaneous Dual-Band Wireless AC1200 Media Router.

Quick links:
Default password/Login
User Manuals


NBG6616 router specifications (specs)

System specs
CPU: 720 MHz
RAM: 128 MiB
Flash: 16 MiB
Custom firmwares: OpenWrt
Connectivity
WiFi: Gigabit (abgn+ac)
WiFi bands: 2.4GHz & 5GHz
WiFi throughput: n/a
WAN: 1 x Gigabit port
ETH: 4 x Gigabit ports
USB-ports: 0

Hard reset instructions for ZyXEL NBG6616

If your NBG6616 router is not working as it should, dropping connections or not being responsive, you should first do a reset of the router to see if the problems persist. Other scenarios where you might want to reset your router is if you've forgotten the password or misconfigured it and can't get access anymore.
Your can reset your ZyXEL NBG6616 in the following way(s):

Through the web interface

  1. Open web browser and go to the address of your router (check defaults below)
  2. Log in with your username/password (default are below)
  3. Under Maintenance, locate Backup/Restore and click it
  4. Locate the section Factory defaults and click the reset button, if prompted click Ok
  5. Wait for the router to reboot

With the reset button

  1. Have the router plugged in and turned on
  2. Locate the reset button which is marked reset and usually in a hole
  3. With a paperclip or sharp pen, press and hold the reset button for 10 seconds until the SYS light starts to blink
    1. If the SYS light doesn't start to blink after 10 seconds:
      1. Keep holding the reset button pressed
      2. Turn off the modem / unplug it
      3. While still holding the reset button, start / plug in the router
      4. After about 20 seconds, the Power or SYS light will start blinking rapidly
      5. Release the reset button
  4. When the light stops blinking and light up normally the router is reset.

The 30-30-30 reset

If the above instructions don't work you can always try the 30-30-30 reset as follows:
  1. When router is powered on, press the reset button and hold for 30 seconds. (Use a paper clip or something sharp)
  2. While holding the reset button pressed, unplug the power of the router and hold the reset button for 30 seconds
  3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

This process usually works for resetting any router to it's factory setting. If that doesn't work be sure to check out the questions and answers incase someone else has had similar problems resetting their router.

Note: It is worth reading more about how to reset routers with the 30 30 30 reset and what the risks and considerations are when resetting your router this way, instead of just rebooting it.


Default factory settings for ZyXEL NBG6616

If you have performed a reset of your NBG6616 device or not changed the defaults, you should be able to access it with the following settings:

Default Gateway IP: 192.168.1.1 ZyXEL login instructions
Default password: 1234 
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.1.1
Note: If you are using the default settings you should change them to increase security and prevent unathorized access to your network.

User Manuals for NBG6616

Do you still have questions concerning the router that you can't find online? You can always try the manuals where most questions should be answered from the manufacturer. Below are the device manuals available for your NBG6616.

Name Type Size Date
User Manual.pdf (click to download) pdf 3.92 MB Sept. 17, 2014

NBG6616 Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more secure from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider flashing an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly increase the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the ZyXEL NBG6616:

Flashing OpenWrt on the ZyXEL NBG6616

The ZyXEL NBG6616 is supported by OpenWrt according to their Table of Hardware. So flashing OpenWrt onto it should be quite straigthforward.
We couldn't find any specific instructions for flashin OpenWrt on the ZyXEL NBG6616, but since it's listed in their Table of Hardware as supported, you can head over to the OpenWrt install instructions and read on there.
Note: Flashing custom firmwares is always on you're on own risk. Make sure to read OpenWrt's wikis to understand the risks and how to proceed if something goes wrong.

ZyXEL stock firmware for the NBG6616

Stock firmwares for the NBG6616 are available under the download section on the modem's support page. You can also refer to the router's manual for instructions on how to upgrade the firmware.




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