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First and formost.. I have Gigablast. I only have a Router with a ONT and not a modem.
Your own forums cause conflicting information concerning firmware updates. one post says you don't do firmware others say you test and will push updates. I have yet to see a single firmware update since i have had the modem. this is going on over 2 years now. what is the deal?
Routers have never been updated by Cox, only modems, and you said you have a ONT instead of a modem. If you want to upgrade your router's firmware, then it is up to you. See here.
::edit:: I should have said never been AUTOMATICALLY updated through the CMTS, because there is no CMTS when you have fiber. I forgot about remote support.
So even thought the router was provided by Cox, with a special version of the firmware on it.V126.96.36.199_10.0.85COX i'm able to upgrade my firmware anyways and not lose any of my speeds?