G981USQU2DUDA / G986USQU2DUDA | Galaxy S20/S20+ May 2021 Security Patch

On this page, we have shared the official May 2021 security patch update for the Samsung Galaxy S20 and S20+ with build number G981USQU2DUDA / G986USQU2DUDA. This update is based on Android 11 and it is now live in USA for the US Carriers such as AT&T, Verizon, and more.

As usual, this update is rolling via OTA (Over the air) in a phase-wise manner. If you have a Galaxy S20 and S20+ (US Carrier model) with variant SM-G988U, then you may receive the notification to upgrade your security patch to May 2021 with a build number G981USQU2DUDA / G986USQU2DUDA.

G981USQU2DUDA / G986USQU2DUDA | Galaxy S20/S20+ May 2021 Security Patch

Check Software Update on Galaxy S20 and S20+:

If you have not received the software update, then check for the OTA update manually by going into Settings –> System > System Updates. In case if you see any new updates, you can hit the download now button to start upgrading your device.

Before upgrading, make sure you have enough juice (battery backup) on your device and connected to a good WiFi network. If there is no new update, then follow this guide to manually install the firmware on your Galaxy S20 and S20+.

Firmware Info:

  • Device Name: Samsung Galaxy S20 and S20+
  • Model No: SM-G988U
  • Build Number: G981USQU2DUDA / G986USQU2DUDA
  • Android OS Version: Android 11
  • Software Supported: ODIN Tool
  • Android Security Patch Level: 2021-05-01 

How to Install May 2021 Security Patch on Galaxy S20 and S20+

Before jumping into the firmware flashing process, ensure to check out the requirements, and download links. You’ll require to download the ODIN flash tool, firmware flash file, and drivers on your computer. Let’s take a look.


  • This stock firmware (G981USQU2DUDA / G986USQU2DUDA) is only applicable for the US Carrier Galaxy S20 and S20+ model.
  • Keep your device charged up to 50% to avoid occasional shut down during the firmware flashing process.
  • A Windows PC/Laptop and a USB Data Cable will require.
  • Make sure to a full data backup before flashing the software on your device.


GetDroidTips will not be responsible for any kind of hardware or software damage to your device while or after you follow this guide. Do the manual flashing process at your own risk. Taking a full data backup is always recommended.

Download Links:

Firmware Installation Guide:

  1. First, download all the necessary files on your PC including the ODIN Flash Tool.
  2. Install and launch the ODIN flash tool > Select the Galaxy S20 and S20+ stock firmware file according to your region to flash it.
  3. You can check out the full depth firmware flashing guide here: How to Install Samsung Stock Firmware Using Odin Flash Tool
  4. For better visualization support, you can also check out our full-depth video tutorial.

That’s it, guys. We hope you’ve now successfully installed the latest May 2021 security patch (G981USQU2DUDA / G986USQU2DUDA) on your Samsung Galaxy S20 and S20+ device. Have some queries? Let us know in the comment section below.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.