[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.
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.
[OnScreen Control] is only available on certain models. Check your owner’s manual to see if your monitor is supported.
When do I need the OnScreen Control app?
- Use [OnScreen Control] when you want to adjust settings like Screen Split or brightness with your mouse.
- Use [OnScreen Control] when you need to update your monitor to the latest software or firmware for improved performance.
- [OnScreen Control] is only available on certain models. Check your owner’s manual to see if your monitor is supported.
Downloading OnScreen Control and updating monitor firmware
How to download and install OnScreen Control
- Check your owner’s manual first to see if your monitor is supported.
- To install the latest version, visit the LG website (www.lge.com) and download the file for your operating system.
- 1. Go to the LG website and select [Support] or [Service] from the top menu.
- 2. Select [Manuals & Software], [Manuals & Firmware], or [Software & Drivers].
- 3. Enter the exact model name of your monitor (e.g., 27GN950) and select your model from the search results.
- 4. Download the installer for your operating system (Windows or macOS).
- 5. Open the downloaded file. Unzip it if necessary, then run the installer to complete the installation.
If [OnScreen Control] is not listed in the monitor driver downloads, your monitor may not support the app.
How to update monitor software or firmware in OnScreen Control
- 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.
- 1.Connect your PC and monitor using the appropriate USB cable.
- 2.In the taskbar search box on your PC, search for [OnScreen Control] and open the app.
- 3.From the left menu in the app, select [Monitor Settings].
- 4.Under [Monitor Software Update], click [Run] to start the update.
Note: If you set [Monitor Software Update Notification] to [On], you will automatically receive notifications when new updates are available.
Frequently Asked Questions (FAQ)
- Q. I opened the OnScreen Control app, but my monitor does not appear in the list.
- A. 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.
- Q. Can I update the firmware using only an HDMI or DP cable?
- A. 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.
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This guide was created for all models, so the images or content may be different from your product.

