Firmware update?

Just got a new modem/router and looking through info trying to solve a wifi issue i see that according to Netgears site the modem has old firmware, so I am wondering if there is a update available.

Heres the site with the info I am going by (http://kb.netgear.com/app/answers/detail/a_id/25477/~/current-firmware-version-for-netgear-cable-modem-routers)

Currently running firmware V1.02.20 New is V1.02.21