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<td><h1>CodeIgniter User Guide Version 1.6.0</h1></td>
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<a href="http://www.codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;Upgrading from 1.5.2 to 1.5.3
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<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
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<h1>Upgrading from 1.5.2 to 1.5.3</h1>

<p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>



<h2>Step 1: Update your CodeIgniter files</h2>

<p>Replace these files and directories in your "system" folder with the new versions:</p>

<ul>

<li><dfn>system/database/drivers</dfn></li>
<li><dfn>system/helpers</dfn></li>
<li><dfn>system/libraries/Input.php</dfn></li>
<li><dfn>system/libraries/Loader.php</dfn></li>
<li><dfn>system/libraries/Profiler.php</dfn></li>
<li><dfn>system/libraries/Table.php</dfn></li>
</ul>

<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>


<h2>Step 2: Update your user guide</h2>

<p>Please also replace your local copy of the user guide with the new version.</p>

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