I have weird issue with NTT 407 tablet that works on Android 4.1.1. I've switched "USB Debugging" and when I plug USB, adb works fine. But I need it working over Wifi, so I connect to my AP, set static IP 192.168.0.53, make sure it's pingable and then try to switch into TCPIP mode with following command:
adb tcpip 5555
Since this moment if I execute
adb connect 192.168.0.53
it should work without USB cable plugged in. At least My Galaxy S2 and another tablet NTT 807 do. But it doesn't! All I get is:
unable to connect to 192.168.0.53:5555
Another weird thing, "adb connect" command works when I've USB plugged in. And "adb devices" command returns
List of devices attached: 192.168.0.53:5555 device
and everything works well till I unplug the USB cable.
Moreover, when I perform
adb kill-server adb devices
I get blank space after List of devices attached, even is USB is plugged. I need to execute adb connect 192.168.0.53 again to work with adb.
It seems that TCPIP mode is working, but still over USB cable.
Any ideas how to fix it and make ADB working over WiFi? Tablet is not rooted and I prefer to avoid doing this, because I don't want to lose warranty.