Although both the devices have great specs that can easily attract a budget mid-range user. Still, these smartphones couldn’t make that much impact on users....
Subrato Chatterjee
Last updated on October 27, 2025
Subrato Chatterjee
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Subrato Chatterjee is an Engineer who has always searched for something new. He found peace in technology, smartphones, and gaming. What do you need more? He is an expert in every sphere of life.
Although both the devices have great specs that can easily attract a budget mid-range user. Still, these smartphones couldn’t make that much impact on users. Both the devices launched in 2020 with Android 10 out of the box.
Samsung finally started pushing their new major OS update, One UI 4.1, for the Galaxy M31s and A21s based on Android 12. The update is now started rolling around the globe.
As per some reports, it is said to be rolling with build number M317FXXS3DVF3 (M31s) / A217FXXU8DVG4 (A21S) for users in India and will soon reach other users around the globe. With this, Samsung has included the latest April 2022 Security patch, which fixes many security bugs and vulnerabilities.
Of course, the Samsung Galaxy M31s and A21s came out of the box with Android 10 and later received the Android 11 update. According to Samsung’s recent policy change, their device will get three years of major OS support and four years of a security patch update. As promised, finally Samsung started rolling their One UI 4.0 update to their most flagship and feature-rich smartphone.
One UI 4.0, which is based on Android 12 brings an entirely new UI design with a simplified color palette feature and the game-changer Android 12’s material YOU design that lets users significantly personalize the look and feel of the UI. The dark mode is now been expanded to all app icons and the camera UI adds ease to use and is better than the last version.
Android 12 One Ui 4.0 Update Tracker:
Updated on November 13, 2022: Samsung started seeding the October 2022 security update to the global users with software version A217MUBUADVI1.
Updated on September 30, 2022: Samsung rolled the July 2022 security patch update for the Galaxy M31s with software version M317FXXU3DVH2. The update is based on Android 12
Updated on January 07, 2022: Today Samsung rolled their first One Ui 4.0 update to the users in India with software version M317FXXS3DVF3 (M31s) / A217FXXU8DVG4 (A21S).
Download Android 12 | One UI 4.0 Update:
Build Number: A217FXXSCDXE2
Security Patch: May 2024
File Size: 4 GB
Country: Global
Steps to Install Android 12 on Samsung M31s and A21s
Before we get straight to the steps to flash the One UI 4.0 update based on Android 12 on your Samsung Galaxy M31s and A21s, let us take a look at the prerequisites first.
Now, let’s look at the Steps to flash Android 12 on the Samsung Galaxy M31s and A21s.
Disclaimer:
We at GetDroidTips won’t be responsible for any kind of damage/error that occurs to your handset while/after following this guide or flashing any file. Proceed at your own risk.
Installation Instructions:
We have provided a detailed installation guide to flash the Android 12 update using Odin Tool on your Samsung Galaxy M31s and A21s. To flash Android 12 (One UI 4.0) on Samsung Galaxy M31s and A21s, you need to follow the below guide carefully:
Download the appropriate Android 12 firmware file for your Samsung Galaxy M31s and A21s.
Extract the contents of the firmware zip file.
Notice that the extracted files will be in “.tar” or “.tar.md5” format.
Now download and extract the Odin tool on your PC.
Open the extracted folder and click on the Odin.exe file.
You need to connect your Galaxy M31s and A21s to the PC while it is in Download Mode.
Notice that the CO port will light up on Odin once you connect your phone.
Click the AP button and select the firmware.
Do the same for BL, CP, and CSC.
Keep in mind that the regular CSC file will erase the entire data. In order to save the data, select the ‘HOME_CSC‘ file.
Don’t forget to select Auto Reboot and F.Reset Time in the Options tab.
Click the Start button to install the firmware on your Galaxy M31s and A21s.
That’s it! You will see a PASS message once the installation is complete.
Check out our full-depth video guide as well.
We hope that this guide will be helpful to you. If in case, you’re facing any issues, feel free to ask in the comments below.
