HI,ASUSmy..I just bought one RT-N66U router and one EA-N66 adapter few day ago...
The router is working find,but adapter make me get a problem.
Then i set the adapter to repeater or adapter mode, it will automatic lose connection with router after few minutes.
The adapter firmware already update to the new one :1.0.1.8k .
i already try to do it best for few day,but the problem still same.

any best firmware for gt-ac5300?
now was 384.32799