Netgear CM1100 firmware update help

Question

I have a netgear CM1100 modem. My internet provider, Sparklight, does NOT update my modem, how do I update the firmware since they do not. Sparklight ONLY updates equipment that a customer rents from them. I purchased this modem because the modem/router I rented from them (Sparklight) at first was a piece of junk and I had continual problems with it. The Sparklight tech that responded (several times) to my house to fix the issues in the past told me to buy my own modem/router because he agreed that the rented equipment was junk.

As far as I know it has the orignial firmware? Operating system would be Windows 11/ Ubuntu linux. It would be in a home office setting. So video conferencing is important.

Please help

Side note: It asked me what board to join, none of the board listed had anything to do with modems, except the one I "joined". This board listed mobile modems? When I went to "show all" it listed languages so select, not boards to select? This is the closest board I could join, because at least it mentioned modems? I did not know which other board I could join?

Dkdman · Answer

I think I figured it out, why the slower speeds when wired.&nbsp; I turned off the firewall, malware and antivirus security features built into the router.&nbsp; After doing that, I was up to 910 to 930.&nbsp;&nbsp;&nbsp;On a side note, I still feel that I should be able to update the firmware on my modem, just like I can update it on my router!&nbsp; Since my ISP won't update my modem firmware because I don't rent it from them!!&nbsp;&nbsp;&nbsp;I appreciate everyones help....&nbsp;&nbsp;

plemans · Answer

Dkdman&nbsp;wrote:
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On a side note, I still feel that I should be able to update the firmware on my modem, just like I can update it on my router!&nbsp; Since my ISP won't update my modem firmware because I don't rent it from them!!&nbsp;&nbsp;
&nbsp;
I appreciate everyones help....&nbsp;&nbsp;

I think we all think that but its part of the docsis spec. Half the reason is that if users could change firmware, they could change their speed tier as that's set with the modem provisioning.&nbsp;
Its one of the reasons you'll rarely see forum members recommend the modem/router combo devices as their firmware is locked too. (except the CAX series, the router side can be upgraded but not the modem side.&nbsp;
This not being able to update modems is true for all brands.&nbsp;

plemans · Answer

You don't. Firmware isn't user updatable. Its part of the provisioning from the ISP.&nbsp;
So there isn't anything you can change with it. Its part of the docsis spec.&nbsp;
&nbsp;
Are you having issues with it?&nbsp;

Dkdman · Answer

But if my ISP doesn't update it, and I can't update it, then updates never happen?&nbsp; What then?

Dkdman · Answer

Is there any way I can check to see what firmware I have on it at least?

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Netgear CM1100 firmware update help

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