did you download this one? http://www.tp-link.com/en/download/NC200.html#Management_Utility Make sure both cameras are still connected to the network and your computer are in the same network. Close...

there is no way to connect a phone to router using usb port to give internet to it, as the usb port on the router is not a internet input, also that usb port on your phone is not internet output.

how about this way, fix the C2600 in band 1 like 44 and bandwidth to 40Mhz. Then reconfigure RE200 to C2600 using 5ghz?

this is not possible. All devices will go back to factory setting after a reset.

found one her, but not sure if it is the one you need. http://www.tp-link.com/nl-be/download/TL-WR1043ND_V3.html#Firmware

do you want to connect synology nas via usb cable or wireless to the C2600? for wireless, you need to pick up your Wi-Fi on the settings of C2600 and input your password. Then you can find nas under...