title: adb backup file size 1 kb
body: <p>I am facing problem in backup my wechat i tried </p>
  
  <pre><code>adb backup -noapk com.tencent.mm
  </code></pre>
  
  <p>It successfully opend the backup screen on my device but when the backup process completed i got backup.ab file with 1 kb size, i also tried to unpack it using this command</p>
  
  <pre><code>java -jar abe.jar unpack backup.ab backup.tar &lt;password&gt;
  </code></pre>
  
  <p>but it is showing me </p>
  
  <p>Strong AES encryption allowed</p>
  
  <p>Magic: ANDROID BACKUP</p>
  
  <p>Version: 2</p>
  
  <p>Compressed: 1</p>
  
  <p>Algorithm: none</p>
  
  <p>1024 bytes written to backup.tar.</p>
  
  <p>and the backup.tar file size remains 1 kb</p>
  
  <p>i tried many blogs but coudn`t get success. Anyone please help me i want to open backup.tar and want to get the data inside it.</p>