title: Is there a way to understand what install error codes actually mean?
body: <p>I'm trying out the in-app update feature and I'm getting a FAILED install status and a -100 install error code. Is there any way for me to know what may be causing this?</p>
  
  <p>I implemented the flexible in-app update and I'm logging each step. Followed Android devs tutorial <a href="https://developer.android.com/guide/app-bundle/in-app-updates#immediate_flow" rel="noreferrer">here</a></p>
  
  <p>I'm generating an apk with a lower version code as the one in Google Play and signing using the same signing key.</p>
  
  <pre><code>2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 1 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 1 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 1 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:01 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 2 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 11 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | completeUpdate was called. 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 3 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : 0 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-594849490]  [T# main]  | onPause 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install error : -100 
  2019-07-24 16:21:12 +0100 InAppUpdates [String#-666477938]  [T# main]  | install status : 5
  </code></pre>