Yes, I have, but it hasn't solved the problem. I've also tried a couple of 'wifi keeper' apps, they don't change anything either.

Yes, I've tried all the channels with no luck.

Model : Hardware Version : Firmware Version : ISP : I use a tl-wr702n mini-router to establish a wireless connection with my DSLR (Nikon D4) which acts as a server, to enable me to operate the camera...