Hey i was wondering do you need root to do this any more? I want to install/run apps over wireless to stop all this cable switching. I have also read that it can cause some
I ran into the same problem today and find that things are fine on my non-rooted 4.2 Galaxy Nexus device, but does not work on my older (again non-rooted) Samsung Galaxy Y (2.3) device.
I tried the steps given here but looks like one needs a rooted phone to work on some of the earlier models (and maybe other non-nexus devices too).
This is what I tried -
$ adb shell netstat | grep 5555
No socket was opened on this port.
Tried to manually set the steps that adb tcpip does -
$ adb shell setprop service.adb.tcp.port 5555
$ adb shell stop adbd
$ adb shell start adbd
$ adb shell getprop | grep adb
This does not show the property that was just set.
This is what it shows on my nexus device where it works without rooting -
$ adb shell getprop | grep adb
[service.adb.tcp.port]: [5555]
So depending on what phone/OS version u have, your mileage might vary.
:-)