Question about Arris SURFboard SB5120 Modem

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I'd like to know if there is a firmware update available for my sb5120 modem and how i would go about doing it

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Turn the modem off, or disconnect the AC power.

Turn the modem on, or reconnect the AC power.

The modem will automatically download the latest software from your Internet Service Provider.

Done!

Posted on Jul 16, 2010

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1 Answer

I recently purchased a Netgear N600 Wireless router connected to my Comcast Motorola Surfboard SB5120 modem. I have a Comcast plan of 20 Mbps but through www.speedtest.net am consistently getting 8 Mbps...


I think its the modem that you need to upgrade. Comcast is already running on DOCSIS 3.0 system. The SB5120 modem that you have is a DOCSIS 2.0 modem. You may need to have your modem replaced with a DOCSIS 3.0 modem like the Motorola SB6120.

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How can i upgrade the firmware on dcm 201 cable modem


The product currently has not firmware updates available
http://www.dlink.com/products/?pid=DCM-201&tab=3
I will get you an update when its available

Dec 25, 2010 | D-Link DCM 201 (DCM-201) Modem

1 Answer

Cox says my SB5120 is resetting 12 pulse times a


May be firmware get corrupted due to power-cut or an excess voltage or surge problem.
At times when there is thunder-storm a lot of excess volatge is generated on the phone wire which is link down to the modem
Ok
try to download recent firmware from manufacturer and see if it can be updated.
Cheers
Uttam

Jan 14, 2010 | Arris SURFboard SB5120 Modem

1 Answer

Connection problems


try to update driver http://broadband.motorola.com/consumers/support/default.asp?supportSection=CableModems

Dec 13, 2009 | Arris SURFboard SB5120 Modem

1 Answer

How to open settings of motorola SURFboard SB5120 modem?


Support for the Motorola SB5120, discontinued product, see next site:
http://broadband.motorola.com/consumers/support/default.asp?supportSection=DiscontinuedProducts

Connecting the device, see the "Quick Reference Guide":
http://broadband.motorola.com/consumers/products/SB5120/downloads/SB5120_Quick_Ref_Guide.pdf

For installing the modem the easiest way is to run the provided cdrom.
When not available perform the settings as showed in the guides.

Motorola 5100 series user guide:
http://broadband.motorola.com/consumers/products/SB5120/downloads/SB5120_User_Guide.pdf

See page 7 "Before You Begin" for the requirements and selecting either USB or Ethernet connection.

Page 22 gives the overview for the pages how to configure ethernet settings.

Oct 31, 2009 | Arris SURFboard SB5120 Modem

1 Answer

Port Forward on Comcast Motorola SB5120


Are you just using a modem and NO router? This modem has no NAT so there is no way to open ports.

Jul 09, 2009 | Arris SURFboard SB5120 Modem

1 Answer

Update driver, for Motorola Surfboard SB51520


hi richard there is search on the internat dorry i cant rmber the site

Nov 12, 2008 | Arris SURFboard SB5120 Modem

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