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user_cfe43e
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Monday, January 10th, 2022 7:49 AM

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Activation Motorola Model MB8611

Hello,

I bought my own modem Motorola MB8611 and sign in Xfinity app activation.  The activation completed.  Unfortunately by the end after restart Xfinity can not connect to my modem.  I can access to the internet ant speed test 600 mbps.  The modem does show in my account inactive and only show the modem of xfiniy issued detected which I disconnect the cable.  I tried reactivation but does not let me.  Any help please?  Thansk!

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3 years ago

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EG

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110.1K Messages

3 years ago

Try calling 1-855-652-3446. That is their device activation line.


If that doesn't work for you, you can call 1-800-comcast and tell a rep that you would like to have a new modem provisioned for service. Have the RF / CM / HFC MAC address and the serial number of it handy when you call.

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user_cfe43e

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@EG Thanks for the help...I got it work last night...seem like you are tried activation online..everything go smooth by the end Comcast can not send signal to your modem.  I did live chat with the agent 3:00 am...the agent take care really good, fast and got it work it matter minute and before he left make sure it work.

I learn something after that I tried setup wireless router ( Asus) and having problem with DCHP..but here tip after setup wifi name and password restart your PC..and it work like charm.  Thanks!

3 years ago

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EG

Expert

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110.1K Messages

Glad you got it squared away ! Just an FYI: A cable modem needs to be power cycled/re-booted each and every time that you change the device that is being directly connected to it in order for that device to be able to get an internet connection.

Now closing your topic.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
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Was your question answered? Please mark an Accepted Answer!tick
I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

3 years ago

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