title: Set ADB in TCP/IP mode: device not found?
body: <p>I've already used this commands before to set ADB to listen on TCP/IP, but this time I'm stunned. The problem is that the error it's throwing just makes no sense:</p>
  
  <pre><code>$ adb tcpip 5555
  * daemon not running. starting it now on port 5037 *
  * daemon started successfully *
  error: device not found
  </code></pre>
  
  <p>In fact even trying to put it in USB mode doesn't work either, with same error:</p>
  
  <pre><code>$ adb usb
  error: device not found
  </code></pre>
  
  <p>Just for the info, the adb help says that:</p>
  
  <pre><code>adb usb                      - restarts the adbd daemon listening on USB
  adb tcpip &lt;port&gt;             - restarts the adbd daemon listening on TCP on the specified port
  </code></pre>
  
  <p>I've made no changes in Android SDK (no updates). Any help would be appreciated.</p>