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  <div class="section" id="upgrading-from-1-5-3-to-1-5-4">
<h1>Upgrading from 1.5.3 to 1.5.4<a class="headerlink" href="#upgrading-from-1-5-3-to-1-5-4" title="Permalink to this headline">¶</a></h1>
<p>Before performing an update you should take your site offline by
replacing the index.php file with a static one.</p>
<div class="section" id="step-1-update-your-codeigniter-files">
<h2>Step 1: Update your CodeIgniter files<a class="headerlink" href="#step-1-update-your-codeigniter-files" title="Permalink to this headline">¶</a></h2>
<p>Replace these files and directories in your &#8220;system&#8221; folder with the new
versions:</p>
<ul class="simple">
<li>application/config/mimes.php</li>
<li>system/codeigniter</li>
<li>system/database</li>
<li>system/helpers</li>
<li>system/libraries</li>
<li>system/plugins</li>
</ul>
<div class="admonition note">
<p class="first admonition-title">Note</p>
<p class="last">If you have any custom developed files in these folders please
make copies of them first.</p>
</div>
</div>
<div class="section" id="step-2-add-charset-to-your-config-php">
<h2>Step 2: Add charset to your config.php<a class="headerlink" href="#step-2-add-charset-to-your-config-php" title="Permalink to this headline">¶</a></h2>
<p>Add the following to application/config/config.php</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="cm">/*</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">| Default Character Set</span>
<span class="cm">|--------------------------------------------------------------------------</span>
<span class="cm">|</span>
<span class="cm">| This determines which character set is used by default in various methods</span>
<span class="cm">| that require a character set to be provided.</span>
<span class="cm">|</span>
<span class="cm">*/</span>
<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;charset&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;UTF-8&quot;</span><span class="p">;</span>
</pre></div>
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<div class="section" id="step-3-autoloading-language-files">
<h2>Step 3: Autoloading language files<a class="headerlink" href="#step-3-autoloading-language-files" title="Permalink to this headline">¶</a></h2>
<p>If you want to autoload any language files, add this line to
application/config/autoload.php</p>
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$autoload</span><span class="p">[</span><span class="s1">&#39;language&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="k">array</span><span class="p">();</span>
</pre></div>
</div>
</div>
<div class="section" id="step-4-update-your-user-guide">
<h2>Step 4: Update your user guide<a class="headerlink" href="#step-4-update-your-user-guide" title="Permalink to this headline">¶</a></h2>
<p>Please also replace your local copy of the user guide with the new
version.</p>
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