Cannot upgrade hardware version......

There may or may not be a new firmware for your version but you didn't fill in the required information in the 1st Post or say what country you are in....also very important as all FWs are different. The C7 V2 is an Old style Router and the menus reflect this , even the new, latest FWs do not have the new look for V2.

there are some Beta Firmwares too....

http://forum.tp-link.com/showthread.php?104053-Archer-C7-V2-Request-for-Firmware-Update&p=233658&viewfull=1#post233658

Even though Archar C7 V2 is very old version, but i don't recommend you upgrade to the newer version.

 

Because you upgraded to the new version, you will lose a lot of security functions, such as  Access Control Rule, 

Bandwidth Control....etc  

 

PS. Genenally, the hardware doesn't chaged. if you want to upgrade your device, you must pay extra payment to order it.