M315FXXU2ATJ9: Samsung Galaxy M31 One UI 2.5 Update

Finally, Samsung started rolling the most awaited update of One Ui 2.5 for the Samsung Galaxy M31 in the India region. The update is labeled with build number M315FXXU2ATJ9. Along with the One Ui 2.5, the update also gets the October 2020 security patch.

One Ui 2.5 brings goodies that were introduced in the Galaxy Note 20 series. Well, this includes a manual selection of video recording resolution, Dex support, can use of Android 10 navigation gestures on all third-party launcher apps, and many other new features and improvements.

If you have not received this update and want to try before it rolls out to everyone via OTA (over the air), then this guide is for you. We have included the instruction to download and install the Galaxy M31 One UI 2.5 Update (M315FXXU2ATJ9) manually.

M315FXXU2ATJ9: Samsung Galaxy M31 One UI 2.5 Update

Firmware Details:

  • Device Name: Samsung Galaxy M31 (SM-M315F)
  • Region: India
  • Build Number: M315FXXU2ATJ9
  • Android OS Version: Android 10 with One UI 2.5
  • Software Supported: ODIN Tool
  • Android Security Patch Level: 2020-10-01 

How to Install One UI 2.5 on Galaxy M31

In order to flash the firmware manually on your Samsung Galaxy M31 device, then you need to download the ODIN flash tool, firmware file, and drivers.


  • This firmware (M315FXXU2ATJ9) is only supported for Samsung Galaxy M31.
  • 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.

How to install stock firmware on Galaxy M31 using ODIN tool

So, make sure to download the One UI 2.5 for your Galaxy M31 model with build number M315FXXU2ATJ9. We hope that this guide was helpful to you.

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