Firmware upgrading on the cable modem C6300 issue

[supems]

I have a cable modem wifi router C6300. I cannot upgrade the firmware because I cannot manually upgrade it nor the service provider has the firmware. I am still using an ancient V1.02.21 firmware where the latest one available is V2.01.18... I have tried various things but nothing worked... Please help...

Supem

[vkdelta]

who is your ISP? Cable devices are upgraded by ISP and NTGR has not capability to upgrade them remotely. 

[supems]

Suddenlink

[vkdelta]

Oh ok. Suddenlink would be a hard nut to crack for Cable modem upgrades. 

other ISPs (including Comcast, Cox, Spectrum, etc) push upgrades to retaail modem with Comcast being best in class. 

[supems]

But I only have this provider in this area...