vieldcs wrote what's the current firmware version and hardware version of your MR6400? Did you check tp-link website for the new firmware? I have the latest firmware, at the moment it is ok, i did...

Not sure what is happening, but router started to restart it self and loos of connection, need to switch it off/on to reconect to my isp, hope there will be any new firmware rls for that.

Anton L.Z. wrote Download app such as Wifi Analyzer to check the wifi signal Nope, thats not it, i need app or something that i can see on what freq is the router conecting to my ISP, is it 800Mhz...

Model : Hardware Version : Firmware Version : ISP : Is there any way that i can see on what band i am conecting is it 800, 1800, 2100 etc and can i see stuf like this