Hi,I need to update my firmware for my CM500 modem. Per Netgear, it should be V1.01.05 but mine is still V1.01.04 (according to modem when I log in from home network). Because Netgear says I need to call my ISP to update, I tried calling Spectrum who said they couldn't do it (but they are sending someone out on Sunday to see if it can be figured out). What other options do I have?Thanks.

Hi. I am having the exact same problems as described above. When I called my ISP, Spectrum/Time Warner, they said that there have been no internet outages in my area in weeks, so it must be my modem. Netgear indicates there is a firmware upgrade, v1.01.05. This is in the troubleshooting advice to upgrade firmware. However, the ISP says they can't do it, and Netgear says they can't do it. How am I supposed to upgrade the firmware?

And this was the last error listed in my event log: Missing BP Configuration Setting TLV Type: 17.9;CM-MAC=2c:30:33:6d:93:70;CMTS-MAC=00:17:10:88:37:06;CM-QOS=1.1;CM-VER=3.0; There are many other errors listed in the log. Synch timing syncronization failure is another common one. It would seem obvious to ugrade firmware, just not possible....

Hello Sparky0721 Yea I see you are getting T3 and T4 timeouts which indicated there is signal issues you will have to contact your ISP and have them come check you lines and the lines in the area. DarrenM

What problem are you experiencing that you think new firmware will fix? Spectrum won't update your modem, so there is no alternative way to update it.

On my PC, I can't connect to the internet and connection to network is spotty at best, and my android's Genie app says "no internet connection" even after connecting to network. However, my iPad DOES connect to the network AND internet.The firmware update was just a guess re: what the problem actually is.

Firmware Update for CM500 | NETGEAR Communities

15 Replies

djc6
Luminary
Jun 17, 2017
What problem are you experiencing that you think new firmware will fix?

Spectrum won't update your modem, so there is no alternative way to update it.
- sparky0721
  Aspirant
  Jun 17, 2017
  On my PC, I can't connect to the internet and connection to network is spotty at best, and my android's Genie app says "no internet connection" even after connecting to network. However, my iPad DOES connect to the network AND internet.
  The firmware update was just a guess re: what the problem actually is.
  - djc6
    Luminary
    Jun 18, 2017
    If one device has solid connectivity and another does not, then the problem isn't with your modem. Since ALL of your internet traffic passes in/out of the modem, it will impact all devices equally.
    
    Just to make sure its not your modem, when you log into your modem administrative web page, what do your signal levels look like? How many correctable/uncorrectable errors, etc? Its probably best to take a screenshot of this information and post it.
    
    What router do you have? Is it somehwat centrally located inside your home? Does it have latest firmware?

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Firmware Update for CM500