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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>CodeIgniter User Guide : Upgrading from 1.5.3 to 1.5.4</title>

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<td><h1>CodeIgniter User Guide Version 1.6.1</h1></td>
<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
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<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
Upgrading from 1.5.3 to 1.5.4
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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 1.5.3 to 1.5.4</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/application/config/mimes.php</dfn></li>
<li><dfn>system/codeigniter</dfn></li>
<li><dfn>system/database</dfn></li>
<li><dfn>system/helpers</dfn></li>
<li><dfn>system/libraries</dfn></li>
<li><dfn>system/plugins</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: Add charset to your config.php </h2>
<p>Add the following to system/application/config/config.php</p>
<code>/*<br />
    |--------------------------------------------------------------------------<br />
    | Default Character Set<br />
    |--------------------------------------------------------------------------<br />
    |<br />
    | This determines which character set is used by default in various methods<br />
    | that require a character set to be provided.<br />
    |<br />
    */<br />
    $config['charset'] = &quot;UTF-8&quot;;</code>

<h2>Step 3: Autoloading language files </h2>
<p>If you want to autoload any language files, add this line to system/application/config/autoload.php</p>
<code>$autoload['language'] = array();</code>

<h2>Step 4: 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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