Maybe you need try this firmware http://static.tp-link.com/Archer%20C9(UN)_V2_170511.zip
I found it at tplink official website ( http://www.tp-link.com/en/download/Archer-C9_V2.html#Firmware)

Did you use the correct FIRMWARE for the country you are in? and obviously the correct Version number , there is a known issue about this though.

I am not sure what country the link Lurvelly posted is from, in the firmware weblink I see a 'en' in the web address which I think is Estonia? , not England though ,
and the zip file name has 'UN' in it, which is for ????

that being said the 17 series Beta firmware on my C7 V2 is working well , no more having to reboot the router each day...

KB

Kbird wrote

Did you use the correct FIRMWARE for the country you are in? and obviously the correct Version number , there is a known issue about this though.I am not sure what country the link Lurvelly posted is from, in the firmware weblink I see a 'en' in the web address which I think is Estonia? , not England though , and the zip file name has 'UN' in it, which is for ????that being said the 17 series Beta firmware on my C7 V2 is working well , no more having to reboot the router each day...KB

Which firmware beta version are you using for your C7 V2 ?

Archer77 wrote

Which firmware beta version are you using for your C7 V2 ?

The one from the 1st Sticky Post in this forum ..... post # 43 (below) there are CA, US and EU versions ( I think they use EU in Oz/NZ too?)

there is also one for the C7 V3 and D9 V1 and several others....

it is here http://forum.tp-link.com/showthread.php?94180-Archer-C7-router-crashed-by-Dell-laptop-with-Killer-adapter&p=195886&viewfull=1#post195886