title: Creating an "update.zip" for install an APK from Recovery Mode (Bootloader)?
body: <p>I'm researching about how to create an "update.zip" file for install the APK or APKs from Android Recovery Mode (Bootloader).</p>
  
  <p>I found this topic in XDA, using a script we can create the "update.zip" file: "<strong><a href="http://forum.xda-developers.com/showthread.php?t=717437" rel="nofollow">Update.zip 2.0 Modifier/Creator [Script] Drag/Drop Support [Windows]</a></strong>", the actual download for the script is: <a href="http://www.mediafire.com/?22o6ez2pvav5eoa" rel="nofollow">http://www.mediafire.com/?22o6ez2pvav5eoa</a> (updated in the page 27, comment #261).</p>
  
  <p>And here a video of how to use this simple script: <a href="http://www.youtube.com/watch?v=i0KzFPMA6-8" rel="nofollow">http://www.youtube.com/watch?v=i0KzFPMA6-8</a></p>
  
  <p>But, I tried it for just a one APK (in the two ways) and the "recovery mode" always got me  "signature verification failed".</p>
  
  <p>Any idea of how to create an "update.zip" correctly for an APK?</p>