P-660R-61C
ZyXEL Prestige 600 series

The ZyXEL P-660R-61C router has No WiFi, 1 100mbps ETH-ports and 0 USB-ports.
It is also known as the ZyXEL ZyXEL Prestige 600 series.

Quick links:
Default password/Login
Login instructions

P-660R-61C router specifications (specs)

Hard reset instructions for ZyXEL P-660R-61C

If your P-660R-61C 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 P-660R-61C 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

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.

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 P-660R-61C

How to login to the P-660R-61C

To login to the ZyXEL Prestige 600 series and change the settings, you can follow these steps:

1. Make sure you are connected to the router's network, either by Wi-Fi or ethernet cable.
2. Open your browser and visit http://192.168.1.1
3. You should be prompted with a login dialogue.
4. Enter the username: admin and the password 1234
   Note: If you have already changed the password use that instead.
5. You will now be logged in. If you haven't yet changed the defaul password, we recommend that you change it first thing you do after logging in.

If these instructions don't work for your router, you can always try a factory reset to get the default, or try some other common ZyXEL credentials, as they can usually be shared across models/variants.

P-660R-61C 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 P-660R-61C:

Flashing OpenWrt on the ZyXEL P-660R-61C

The ZyXEL P-660R-61C 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 P-660R-61C, 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 P-660R-61C

Stock firmwares for the P-660R-61C 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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