TV service through Cable Card on TiVo has stopped working

I spoke with a tech from AZ in Advanced Support on Monday evening.  Apparently they rolled out an upgrade over Thanksgiving impacting a lot of Cisco/Scientific Atlanta cable cards.  Most people started seeing issues Sunday evening.  He was not able to resolve my issue.  Place a call and ask to open customer support to open an engineering ticket.   

I am having the same issue,  started today 12/3/24

... My service is through cable card in my TiVo. ... 

Please see the discussion in https://forums.xfinity.com/conversations/nonx1-service/tv-service-through-cable-card-on-tivo-has-stopped-working/66b8e97759bf556396a3bc8a?commentId=674d36b2b48e464010323535.

Got a callback this AM from Advanced Support.  Apparently a number of cards were not taking regular firmware updates and they were pushed out manually over Thanksgiving. 
Engineering continues to work on why a large number failed. 
I'll post any further updates in the thread BruceW linked above.

I just read this in my bill dated 9/22/24  - "Equipment Update: Starting on October 24, 2024, Xfinity will no longer provide new CableCARDs to new or existing customers. If you require new
TV equipment, please call 1-800-XFINITY to speak with an agent who can assist."   As someone said above, essentially my TiVo is now non-functioning.  I got out of the habit of reading the comments in my bills.....I wish I hadn't. 

Same question.  Need help ASAP.  

@XfinityRichard You state that "Xfinity is still supporting existing cable Cards". How can I obtain knowledgeable support for an existing CableCARD?  Talking to Xfinity on the phone and having a technician sent to my home has not been successful.  Is there a phone number or other method that connects me with a human being that  I can use to reach the department that has knowledge of CableCARDS?  The numbers 888-966-7516  and 877-405-2298 do not connect me with the people that can help and the people that answer these calls never forward me to anyone that knows about CableCARDS. 

I am having the same problem. My cable card stopped working in my TiVo the afternoon of December 5. I have called support several times and the agents have sent signals and I have rebooted many times but so far no resolution. My host and cable card are paired but I am still receiving either the V58 or V53 message with a black screen. I would appreciate a response from the advance team mentioned herein to see if they are still working on the software issue. The last agent I talked to created a ticket so I am hopeful someone will contact me. I was not aware of the notice on my bill in September and August about cable cards no longer being provided after October 24, but if I had seen that notice I probably would not have taken action since my cable card worked fine until the end of last week. If there are working cable cards seems like an exception should be made for long time loyal existing customers like me whose cards suddenly stopped working after the October 24 deadline and the issue is a software problem. 

I am aware Xfinity is no longer providing New CableCards.  I'm just hoping there is a resolution to bring my current card back to life. 

My TiVo remains is a state where I cannot view Cable thru the TiVo box.     What I have tried so far since 12/01/24

1. Verifying Cable is working to the TiVo- yes
2. Verifying the Internet connection to the TiVo- yes
3. I can connect to TiVo service- yes
4. Unrelated to all this I have replaced the following items in the last 5 weeks (a) modem (b) Router (c) Xfinity replaced the RJ11 cable that runs from the pedestal to my house (d) my wiring internal to the house has been verified as working.
5. I have spoke to Xfinity phone support multiple times. The first line of support seems to lack CableCard knowledge.
6. Xfinity has sent a technician to my home. He also lacked CableCard knowledge but did what he could to confirm that Internet & Cable were working and he concluded that the issue was the CableCard.  I have two TiVos. One works and one does not.  We were able to switch the TiVo box Locations.  The one that doesn’t work still didn’t work in the other room/connection.  The one that is working in its original location, does work in new location/connection. In conclusion, the Cable Card is the issue.
7. I called Xfinity again 12/9. Because I have called multiple times and had a technician at my home, they were finally willing to transfer me to the Cable Card Repair Team. 
8. This support person immediately told me there was no hope and offered me the Xfinity Cable Box that some of you also have been offered. She allowed to have a conversation with her about the possible issues that could be causing this.
   1. Her feedback was that this was the “Doomsday clock for 'PowerKEY' cards”—she didn’t use these words but this is what she meant. It’s the clock issue. https://www.lightreading.com/security/doomsday-clock-ticks-for-millions-of-powerkey-set-tops
   2. She also said I should expect the 2nd TiVo I have to stop working by the end of 2024
   3. I asked if it is possible what I am experiencing is what some of the users have posted which is a number of cards were not taking regular firmware updates that Xfinity pushed out manually over Thanksgiving. (My TiVo stopped working 9:37pm CST the Saturday after Thanksgiving).  She would not confirm of deny this. She held on to the theory that this is the Doomsday clock issue.    
9. After this conversation, she was willing to open a ticket with the Advanced Engineer to see they can provide a further diagnosis or resolution. I await their call back.

I'm open to other suggestions or help that could get the TiVo working again. 

The is not a new cable card.  I activated it in 2017. 

Hello,

I have all the same issues with our long-term, existing cable card for our TIVO.

Several calls to customer service.  Escalated to Advanced Engineering on Saturday afternoon. 

I was promised a call back in 1-2 hours.  Never received any call at all.

Please advise how you will be supporting my existing (previously working) Scientific Atlantic cable card.

I need support and I am receiving nothing but upgrade offers.

Please advise!

... Please advise how you will be supporting my existing (previously working) Scientific Atlantic cable card. ...

I haven't request an Xfinity X1 TV Box but that appears to be the only "solution" Xfinity is offering.    Thanks to all the users for their comments.