A207FXXU2BUD2 | Galaxy A21S March 2021 Security Patch (Global)

Samsung Galaxy A21S started receiving March 2021 security patch update with build number A207FXXU2BUD2 which is based on Android 10.0.

The update is rolling via OTA (Over the air) in a phase-wise manner and will soon hit every user around the world. If you have a Galaxy A21S with variant SM-A207F, then you may receive the notification to upgrade your security patch to March 2021 with build number A207FXXU2BUD2.

A207FXXU2BUD2 | Galaxy A21S March 2021 Security Patch (Global)

Check Software Update on Galaxy A21S:

If you are using Galaxy A21S, then you may receive the March 2021 patch with firmware version A207FXXU2BUD2. If you don’t then check for the OTA update manually by following the step: Settings app | About Phone | System Updates. In case you see any new updates, click on the download button to start the upgrade process.

Before upgrading, make sure you have enough juice (battery backup) on your Galaxy A21S 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 A21S using the ODIN tool.

Firmware Info:

  • Device Name: Samsung Galaxy A21S (SM-A207F)
  • Region: Global
  • Build Number: A207FXXU2BUD2
  • Android OS Version: Android 10.0
  • Software Supported: ODIN Tool
  • Android Security Patch Level: 2021-03-01 

How to Install March 2021 Patch on Galaxy A21S

Flashing firmware on your Galaxy device is easy, all you need is firmware, drivers, and a tool called ODIN. If you have all this, then you are good to follow this guide.


  • This firmware (A207FXXU2BUD2) is only supported for Samsung Galaxy A21S.
  • Charge your device to 50% in order to avoid power-related interruptions during the installation process.
  • You need a PC and USB Cables.
  • Take a 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. Install non-official firmware on your device at your own risk.

Download Links:

Firmware Installation Guide:

For the installation process, you can follow the guides given below. It includes a video tutorial as well as a practical approach to the installation process.

So, make sure to download the March 2021 Security patch for your Galaxy A21S model with build number A207FXXU2BUD2. We hope that this guide was helpful to you.

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Your email address will not be published.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.