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...

Yes , this Thread is for the Euro Version which is also used in Australia apparently. For me , The Beta is Newer and more stable than the latest official one on the CDN site which is now over a Year...

nirajkp wrote I have recently upgraded my archer c7 router with v2 firmware http://www.tp-link.in/download/Archer-C7_V2.html#Firmware But after this media server is not visible in my network. Please...

cardonator wrote This firmware solved nothing. If anything, it has made my network even more unstable than it already was. The 5Ghz network is all but unusable. It essentially stops responding...

zetton wrote thanks. but I don't say about jumbo frame. OK. You titled the thread "jumbo frame on C5400" so people think that is what you are asking about ...... Perhaps ask over at SmallNetBuilders...

not sure if it will help , but see this post I made yesterday for someone else.... http://forum.tp-link.com/showthread.php?99375-Archer-C7-USB-issue&p=225702&viewfull=1#post225702