How to factory reset Motorola SURFboard SB6121 router – Default Login & Password

The Motorola SURFboard SB6121 router has No WiFi, 1 Gigabit ETH-ports and 0 USB-ports.
It is also known as the Motorola Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem.
How to factory reset Motorola SURFboard SB6121 - Default Login & Password

Motorola SURFboard SB6121 default Password , Login & Gateway settings :

Default Gateway IP:
Default subnet mask:
Default DNS server:

How to factory reset (hard reset) Motorola SURFboard SB6121 :

You can factory reset your Motorola SURFboard SB6121 in the following way(s)
1. When the router is on, press the button reset and hold for 30 seconds.
2. While holding down the button reset, turn off the power of the router and hold down the button reset for 30 seconds
3. While holding down the button reset, turn on the power to the unit again and hold for another 30 seconds

Motorola SURFboard SB6121 router specifications :

System specs
CPU: n/a
RAM: 32 MiB
Flash: 8 MiB
Custom firmwares: None
WiFi: No ()
WiFi bands
WiFi throughput: n/a
1 x Gigabit port
USB-ports: 0
Motorola SURFboard review (quick overview)
Here is the quick comparison of how the Motorola SURFboard compares to
other routers on our site
Current price
For a full list of routers and how they compare to the SURFboard SB6121, check the
Router Buying Guide which will help you buy the most
price-competitive router.
SURFboard SB6121 Firmwares
Staying up to date with the latest firmware is a good idea to keep your router even more
from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider
an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly
the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the Motorola SURFboard SB6121
Motorola stock firmware for the SURFboard SB6121
Stock firmwares for the SURFboard SB6121 are available under the download section on the
support page. You can also refer
to the router’s manual for instructions on how to upgrade the firmware.