title: Android Error "custom binary blocked by frp lock" When Debugging Over Wifi
body: <p>I am developing a small Android app, and debugging using Samsung Galaxy phone (first with S6 and later S7).<br>
  After several times of debugging the application, the phone has suddenly entered a <strong>"custom binary blocked by frp lock"</strong> and stopped responding.</p>
  
  <p>I haven't rooted the phone, so there is no custom binary I can think of.
  I did use a 3rd party framework which uses JNI, but I don't know if it is related:
  <a href="https://github.com/jiangdongguo/AndroidUSBCamera" rel="nofollow noreferrer">Android USB Camera</a></p>
  
  <p>Since I am writing an application which uses a USB camera, I I am debugging over Wifi. <br>
  This situation happens after several time I debug, and after a few hours of work.</p>
  
  <p>Any idea what causes this? Is it a malware in the 3rd party library?</p>