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CM1200 | Switched ISPs and Modem cannot activate because of the firmware version
Hi,
I have a CM1200 modem that was originally bought to replace a Spectrum modem.
The current firmware on the device is the latest approved spectrum firmware (v3.02.01).
I recently moved and the only ISP available is not an "approved" ISP but is "compatible". The new ISP is having trouble activating this modem on their network.
I believe that I need to get the CM1200 back to firmware version v2.02.03, in order for their network to be able to successfully activate my own modem.
However, it seems like the only way for the firmware to be upgraded is by the ISP itself. Does anyone know how to manually reset the firmware? Or am I totally off base here, and the ISP should still be able to push the correct firmware version.
Appreciate any help or guidance if anyone has gone through a similar situation.
Optimum is a PITA to deal with. Worse than xfinity and that's saying something.
You're right in that they still don't support ipv6 and that could be the issue.
I've seen 1 other case (quite a while ago) where a user was coming from an IPv6 isp to altice and had this issue.
The prior ISP set their modems firmware to only accept IPv6 and so when optimum tried to provision, they weren't able to because of the prior ISP's firmware.
If I remember correctly (it was a while ago and I couldn't find the post), the user had to buy a new modem.
Reason why is you can't push firmware independent of an ISP.
Are you still within warranty? Potentially you could see if support would replace it but its doubtful as its not a hardware failure as its an issue between the prior isp and the current.
To get a hold of support. Click on "MyNetgear" at the top.
Register an account (or login) and then the device.
From there you can start the support process. Keep in mind that its only free for the first 90 days.
6 Replies
The firmware is part of the provisioning for the device. when the ISP activates the mac/device on their network and sends the provisioning, that has the firmware and the speed settings.
So there isn't a way to change the firmware on it.
Is the ISP able to ping/see the modem on their network?
Currently when trying to attempt to set up with my ISP.
I take out their provided modem, provide them with the MAC of the CM1200. It boots up properly until it gets the internet light, which never turns solid, only blinks.
The ISP tells me that they see the modem on their network, however after a period of time the sequence resets back to DS/US acquisition, and then gets back to the blinking internet light.
But basically, on the last phone call they were telling me that they would see the device online and then it would go offline (on their end) every couple of minutes.who's your isp?
Got a screensnip of the cable connections page and event logs while thats going on?