Modem firmwear?

I just got a new modem today. Was having trouble getting it activated but once I finally did, I had very slow speeds. Only 3Mbps. Talked to cox support, they said everything looked good on their end, so I talked to Netgear support. They said my Firmwear is not updated and that cox has to do that. Got back with cox support, told them i need a firmwear update, they said ok let me run some tests. Finally said there was nothing they could do and gave me a number to call for another cox support. Called them and they can't do it.

I have a Netgear C2650 firmwear V 1.02.01 and netgear said I need V 1.02.29 with cox. I seen somewhere that cox will update it automatically, But that hasn't happened yet. Does it take time to update or do I need to keep calling until its fixed?