title: APDU command change IMSI SIM CARD
body: <p>I am trying to use <strong>UPDATE BINARY</strong> command using APDU command for modify IMSI code, but The response is <code>98 04</code>.</p>
  
  <pre><code>A0 A4 00 00 02 3F 00 -&gt; SELECT MF
  A0 A4 00 00 02 7F 20 -&gt; Select DF_GSM
  A0 A4 00 00 02 6F 07 -&gt;Select EF_IMSI
  A0 D6 00 00 09 [08 79 03 30 60 00 61 33 23] -&gt; UPDATE IMSI FOR RANDOM NUMBER
  </code></pre>
  
  <p>when doing this I get the following response <code>98 04</code> and it is not modified.</p>
  
  <p>According to the documentation The response <code>98 04</code> can mean the following:</p>
  
  <ol>
  <li>access condition not fulfilled</li>
  <li>unsuccessful CHV verification, at least one attempt left</li>
  <li>unsuccessful UNBLOCK CHV verification, at least one attempt left</li>
  <li>authentication failed</li>
  </ol>
  
  <p>How I can change IMSI?</p>
  
  <p>Thank you.</p>