Help Library: Help Library: How to download the LG OnScreen Control (OSC) app and update monitor software or firmware

How to download the LG OnScreen Control (OSC) app and update monitor software or firmware

Troubleshooting Consumer Monitors 05/13/2026

<body >
  
<div class="content-service-view" itemtype="HowTo">
    <p class="info-desc description">[OnScreen Control] is an app that lets you easily manage LG monitor features from your PC, including Screen Split, monitor settings, and software or firmware updates.<br/>
      You can download the app for your operating system from the LG website. To update the software or firmware, your PC and monitor must be connected using a USB cable.<br/>
      [OnScreen Control] is only available on certain models. Check your owner’s manual to see if your monitor is supported.
    </p>    
<h2 class="tit">When do I need the OnScreen Control app?</h2>
    
<ul class="cause-list">
      
<li>Use [OnScreen Control] when you want to adjust settings like Screen Split or brightness with your mouse.</li>
      
<li>Use [OnScreen Control] when you need to update your monitor to the latest software or firmware for improved performance.</li>
      
<li>[OnScreen Control] is only available on certain models. Check your owner’s manual to see if your monitor is supported.</li>
    </ul>
    
<h2 class="tit mainName">Downloading OnScreen Control and updating monitor firmware</h2>
    
<div class="HowToStep">
      
<h3 class="name">How to download and install OnScreen Control</h3>
      
<ul class="cause-list">
        
<li>Check your owner’s manual first to see if your monitor is supported.</li>
        
<li>To install the latest version, visit the LG website (www.lge.com) and download the file for your operating system.</li>
      </ul>
      
<ol class="list-multiple">
        
<li>1. Go to the LG website and select [Support] or [Service] from the top menu.</li>
        
<li>2. Select [Manuals &amp; Software], [Manuals &amp; Firmware], or [Software &amp; Drivers].</li>
        
<li>3. Enter the exact model name of your monitor (e.g., 27GN950) and select your model from the search results.</li>
        
<li>4. Download the installer for your operating system (Windows or macOS).</li>
        
<li>5. Open the downloaded file. Unzip it if necessary, then run the installer to complete the installation.</li>
      </ol>
      <p class="info-desc">
<span aria-hidden="true">※</span> If [OnScreen Control] is not listed in the monitor driver downloads, your monitor may not support the app.</p>    </div><br/>
    
<div class="HowToStep">
      
<h3 class="name">How to update monitor software or firmware in OnScreen Control</h3>
      
<ul class="cause-list">
        
<li><strong>To update the monitor software or firmware, your PC and monitor must be connected using a USB cable (e.g., USB-A to USB-C, USB-A to USB-B, USB-C to USB-C, or Thunderbolt). Your PC must also be connected to the internet.</strong></li>
      </ul>
      
<div class="img-only"><img src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=3hiH3jlVGUHLaUuXVFv3Qw&amp;portalId=P1" alt="Connecting the monitor to a PC using a USB cable (e.g., USB-A to USB-C, USB-A to USB-B, USB-C to USB-C, or Thunderbolt) to update the monitor software."/></div>
      
<ol class="list-multiple">
        
<li>1.Connect your PC and monitor using the appropriate USB cable.</li>
        
<li>2.In the taskbar search box on your PC, search for [OnScreen Control] and open the app.</li>
        
<li>3.From the left menu in the app, select [Monitor Settings].</li>
        
<li>4.Under [Monitor Software Update], click [Run] to start the update.</li>
      </ol>
      <p class="info-desc">
<span aria-hidden="true">※</span> Note: If you set [Monitor Software Update Notification] to [On], you will automatically receive notifications when new updates are available.</p>    </div>
    
<div class="img-only"><img src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=juFNeOkZB9D7QKAKPaGNw&amp;portalId=P1" alt="Connecting the monitor to a PC using a USB cable (e.g., USB-A to USB-C, USB-A to USB-B, USB-C to USB-C, or Thunderbolt) to update the monitor software."/></div>
    
<div class="tip-box qna-list">
      
<h3 class="tip-tit">Frequently Asked Questions (FAQ)</h3>
      <dl>
        <dt>
          
<span aria-label="Question">Q.</span> I opened the OnScreen Control app, but my monitor does not appear in the list.
        </dt>
        <dd>
          
<span aria-label="Reply">A.</span> The LG monitor may not be connected properly, or your model may not support the app. Check your cable connection, and refer to your owner's manual to see if your monitor is supported.
        </dd>
      </dl>
      <dl>
        <dt>
          
<span aria-label="Question">Q.</span> Can I update the firmware using only an HDMI or DP cable? 
        </dt>
        <dd>
          
<span aria-label="Reply">A.</span> No. In addition to an HDMI or DP cable for video output, you must also connect a USB cable (e.g., USB-A to USB-C, USB-A to USB-B, USB-C to USB-C, or Thunderbolt) for data communication to update the firmware.
        </dd>
      </dl>
    </div>
    <p class="mobile-txt">Move left or right to check the contents.</p>    <p class="help-txt">This guide was created for all models, so the images or content may be different from your
      product.</p>  </div>

</body>
</html>
	
</div>

*Required question

Article Feedback Article Feedback

Thank you for your feedback!

Help Library

How to download the LG OnScreen Control (OSC) app and update monitor software or firmware

Contact