title: Android App Not Install. An existing package by the same name with a conflicting signature is already installed
body: <p>In my emulator, when I try to do an upgrade of my apk programmatically. I get:</p>
  
  <p><code>Android App Not Install.</code></p>
  
  <p><code>An existing package by the same name with a conflicting signature is already installed</code></p>
  
  <p><img src="https://i.stack.imgur.com/tjUz8.jpg" alt="enter image description here"></p>
  
  <p>I'm still in the testing phase of this upgrade, so the file I download is a signed apk of a previous version, which I think should work without any issues. </p>
  
  <p>From the suggestion in: <a href="https://stackoverflow.com/questions/19045353/an-existing-package-by-the-same-name-with-a-confilcting-signature-is-already-ins">an existing package by the same name with a confilcting signature is already installed</a> I tried to run the emulator both in debug mode and in normal mode... neither worked. </p>
  
  <p>Any thoughts on what I'm missing?</p>