White dots appear on top of the Samsung Smart Gaming Monitor screen

If you're seeing white dots at the top of your Y23 Smart Gaming Monitor or Y23 5K Viewfinity Monitor when playing video content via USB/DLNA, the issue can be resolved by updating the software to version 0080-2049.0 or later. This article guides you through the steps to update your monitor's software.
A Samsung Smart Gaming Monitor displaying a snowy mountain scene with a white dot in the top corner
A Samsung Smart Gaming Monitor displaying a snowy mountain scene with a white dot in the top corner

White dots appear on top of the Samsung Smart Gaming Monitor screen

Note
Ensure your monitor is connected to a stable power source and compatible cables.
1

Check the currrent software version.

Press the multi-directional JOG button on your monitor to open the Control panel. Push upward on the JOG button to highlight Menu, then press the JOG button inward to select. Use the JOG button to navigate to Support  > Information to check the current software version.

A Samsung Smart Monitor showing the Support menu with the Information option highlighted in blue.

Note
Menu options may vary by model and software version.
2

Prepare the USB device.

Ensure the USB device is empty and formatted to FAT32.
 

  • Format with a PC: Insert the USB drive into your computer's USB port. Open File Explorer, right-click on the USB drive listed under "This PC" or "Removable Drives," and select Format from the menu. In the Format USB Drive dialog box, ensure the file system is set to FAT32. Click Start to begin the formatting process, review the warning message, and select OK to confirm. Wait for the formatting process to complete, and if prompted, select OK to finalize.
    A computer screen showing a file explorer with a right click menu and the Format option highlighted in blue.
  • Format with a phone: Connect the USB drive to your phone's USB port. Then, navigate to and open the My Files app or Files app on your device. Select the connected USB drive under "Storage," and then tap the More options icon (three vertical dots) in the top right corner. Tap Format, and then follow the on-screen instructions to confirm and complete the formatting process.
    A Galaxy S26 Ultra screen showing the USB storage menu with the Format option highlighted in blue.

Once formatted, the USB drive is ready for use. Proceed with copying the update files as instructed.

Note
A USB-OTG adapter may be needed. 
3

Download the latest software update.

Visit the Samsung Download Center. Go to Samsung.com, and then select Support. Select Computing, and then select Monitors. Using the search field, enter and select your model code (e.g., LS27C900PANXZA). Select Manuals & Software, and then locate the Upgrade file (USB type), MAIN for your monitor under the "Firmware" section. Select Download next to the latest firmware version to download the file.

A Samsung support page for the 27 inch ViewFinity S9 monitor with the download button for the OS Upgrade file highlighted in blue.

Note
If the OS Upgrade file (USB type) firmware is available, download it instead of the Upgrade File (USB type), Main firmware.
4

Extract the downloaded file.

Locate the downloaded file on your PC or phone, and unzip it. Copy or move all the files from the extracted folder to the root directory of the USB drive. Do not place the files inside any additional folders on the USB drive. Safely disconnect the USB drive by clicking Safely Remove in Taskbar on your PC or tapping Unmount from the USB storage Notification on your phone.

A Galaxy S26 Ultra screen showing the USB storage menu with the Unmount option highlighted in blue. 

Note
Do not rename any of the firmware update files stored on the USB drive. 
5

Connect the USB device to your monitor.

Insert the USB drive into the USB SERVICE port on the back of your monitor.

A close up of the back of a Samsung Smart Monitor showing various ports including USB C and power. 

6

Navigate to the Software Update menu.

Press the multi-directional JOG button on the back of your monitor to open the Control panel. Push upward on the JOG button to highlight Menu, then press the JOG button inward to select. Use the JOG button to navigate to Support, then select Software Update. Select Yes if prompted.

A Samsung Smart Monitor showing the Support menu with the Software Update option highlighted in blue. 

7

Install the latest firmware update.

The monitor will search for update files on the USB drive. Follow the on-screen instructions to install the updated software. Do not turn off the monitor until the update is complete (updates usually take a few minutes). The monitor will restart automatically once the update is finished.
Note

If you encounter the message "No update files found on your USB device. Please check your USB device and try again," it is likely due to one of the following reasons:

  • USB memory not connected to the SERVICE port: Ensure the USB drive is properly connected to the SERVICE port on the monitor
  • Incompatible file formats: Verify that the files on the USB drive are in compatible formats (e.g., .bin files).
  • No valid update files found: Check that valid update files are saved in the USB memory. Ensure the files are not missing or incorrectly named.
  • Avoid interruptions during update: Do not turn off the product until the update is complete. Interruptions may cause the product to revert to its previous version.
  • Screen blinking in green during update: If using a DVI-HDMI converter, the screen may blink in green during the update. This is normal, and the update will proceed as expected. Wait until the update is complete.

If the issue persists, double-check the USB drive and its contents, and ensure all steps are followed correctly.

8

Contact Samsung Support.

If you're unable to install the firmware or if the problem persists after updating the firmware, reach out to Samsung Customer Support for further assistance.
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