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user_oq3jbg
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11/12/2026 11:50 PM

Email about required upgrade to a DOCSIS 3.1 modem

I have received an e-mail from Xfinity which basically says "Your current modem is no longer receiving important security updates... . When you upgrade your modem, you’ll help ensure your equipment is ready for the latest Xfinity services.” The email suggests an upgrade to a DOCSIS 3.1 modem. Now, to evaluate whether this is worth the investment and stay with this technology, it would be useful to know if Xfinity is offering mid-split or high-split on the node serving my neighborhood so that I could move toward a symmetrical upload/download subscription of at least 500 Mbps. If Xfinity stays with the traditional sub-split configuration, this won't be possible and thus the investment is not worth it (for me anyway). If this is the case, given the currently publicized service pricing (which only mentions upload speeds), I would rather move to an optical fiber (symmetrical) service. There is more than one fiber provider in my area, offering competitive pricing and therefore I'd skip the investment on a new cable modem altogether. Does anyone else have a similar concern?

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2 days ago

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XfinityAldrik

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2 days ago

Thank you for providing these details @user_oq3jbg! These emails were sent to customers with a DOCSIS 3.0 modem. When a device is labeled as end-of-life (EOL), the manufacturer will stop sending security and firmware updates. The device may also have issues supporting faster internet speeds. Being grandfathered on the account, it can remain active and be utilized. For more information on modems currently recommended, we have a really handy site here.

 

Our team can certainly double check if the network in your area has been upgraded to help you decide on which modem would be best to purchase. Please send us a direct message with your full name and complete service address to “Xfinity Support”. To do so, click on the direct messaging icon located at the top right of this forums page.

 

Here's the detailed steps to direct message us:

  1. Click "Sign In" if necessary.
  2. Click the "Direct Messaging" icon.
  3. Click the "Start new conversation" (pencil and paper) icon. 
  4. In the "To:" line, type "Xfinity Support".
  5. As you type, a drop-down list will appear. Select "Xfinity Support" from that list.
  6. An "Xfinity Support" graphic will replace the "To:" line.
  7. Type your message in the text area near the bottom of the window.
  8. Press Enter to send it.

 

You can see how to send us a direct message here.

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