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ATB's avatar
ATB
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Oct 25, 2023

CM2050V unstable after Comcast updated firmware

I have the same issue with two CM2050V modems at two locations (one in Massachusetts and another in California). I have Xfinity triple-play service (Gigabit Internet option). After the modems have been upgraded to V9.01.01, they get stuck every 2-3 weeks and require power cycling. I ended up installing timers, so the modems got power-cycled every night.  I hope Comcast / Netgear fixes this issue soon!

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    • ATB's avatar
      ATB
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      I have tried twice already to reply to your request for log files and somehow it does not get posted.

      • Can you copy the data into a wordpad or word doc then export to PDF file then attach that file to your next post?

  • I had the same issues. Purchased a Connect Sense Router Rebooter from Amazon since I was traveling away for an extended time period and could not manually reboot, this seems to work so far. Today, I just got the following email from Comcast, which explains that I do not have a defective modem or connections:

    We've identified an issue with your NETGEAR internet modem

     
    We've noticed intermittent connectivity issues with your internet service and have identified the cause to be a defect with your NETGEAR CM2050V internet modem. NETGEAR is working on a software update that should fix the problem. Because the update may not be available for several months, we have taken steps in the interim to stabilize your connection and provide you with the best possible experience. These proactive measures should resolve your intermittent connectivity issues and provide you with fast speeds, but your modem may not achieve the full upstream speeds included in your Xfinity Internet package until the NETGEAR CM2050V software update is deployed.

    No action is required at this time. However, if you want to ensure you're getting the full speeds included in your internet package, you may want to consider these options:

    Lease our Xfinity Gateway, which is a combined modem and WiFi router designed to deliver enhanced coverage and the benefits of our next-generation Xfinity 10G Network.
    Purchase a new modem from our recommended device list.
    Change your current Xfinity package by visiting xfinity.com.
    Otherwise, we'll reach out again once we receive further information from the device manufacturer on when a fix will be in place.

    Thank you for being an Xfinity customer.
     
    • ATB's avatar
      ATB
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      I also received these email messages from Comcast today for my two modems (one in CA and one in MA).  So it was an issue with the new firmware all along, as many of us had suspected.  I really hope that Netgear fixes this firmware issue for CM2050V really soon!

       

      • So, when is Netgear going to fix the problem now that Comcast/Xfinity has clearly thrown the ball back into Netgear's court?

         

        Or will Netgear keep blaming Comcast.

         

        Netgear -- how about an update?

         

        I at least applaud Comcast for notifying me, wish Netgear had done the same.