[Samsung Galaxy M31 Guides, News, & Discussion] BredzProh:
One UI 3.0 beta has been released for Galaxy M31.

If you are part of the supported regions, you can grab the update link and share it here (for each update).

These are the steps I borrowed from @AhmedMomen 's S10 thread.

How to capture the update.zip file to share with other people:

1. Download HTTP canary app from Play Store.

2. Open HTTP Canary app.

3. Start the update by pressing "Download". Don't pause it!

4. Go back to Canary app and start it. It will grab the link for you.

5. Please share the link and your model number here!

As for how to sideload the update.zip file, here is the:

ADB Method:

1. Download and install adb.

2. Connect your phone to your PC.

3. Download the update file where you have installed adb Platform Tools.

4. Rename the file (including the extension) to "update.zip". Click "Yes" on the prompt.

5. Open your terminal of choice.

6. Type "adb reboot recovery" and press ENTER on your keyboard. Wait for your phone to reboot to recovery mode.

7. Navigating with the volume buttons and selecting with the power button, go to "Apply update via ADB".

8. Back to the terminal on your PC type "adb sideload update.zip". (NOTE: If it says that device is not connected, just remove and put the USB cable back until it works).

9. The update is being installed. It will be completed when the phone boots up. You may use your phone normally after.

10. Report any bugs on the Samsung Members app! https://www.samsung.com/global/galaxy/apps/samsung-members/

SD Card Method:

1. Search for an update file. You can usually find one in XDA Forums.

2. Check if you have the right build and open the right link.

3. Download the update file (.bin extension).

4. Move the update file to your SD Card. (NOTE: If you are getting errors, back up the stuff of your SD Card and format it from your Galaxy phone.)

5. Rename the .bin file (including the extension) to "update.zip". Click "Change" on the prompt.

6. Reboot to Recovery Mode, by connecting your phone to another device (such as your earphones) and holding the Volume Up + Power (+ Bixby) buttons.

7. Navigating with the volume buttons and selecting with the power button, go to "Apply update via SD Card".

8. Navigate to and select "update.zip".

9. The update will start installing. It will be completed when the phone boots up. You may use your phone normally after.

10. Report any bugs on the Samsung Members app! https://www.samsung.com/global/galaxy/apps/samsung-members/

You may also roll back to One UI 2.5 or update to stable One UI 3.0, when it's released with this method:

1. Download and extract both Frija and Odin.

2. Launch Frija.

3. Check the "Auto" button. Write your device's Model Number and CSC

(Your model number is at Settings, then About phone).

4. Click on "Check Update".

5. Click on "Download" and choose a folder to save the firmware.

6. After the download is complete, extract the firmware .zip.

7. Launch Odin.

8. Click the "BL" button and select the file that starts with "BL_...".

9. Click the "AP" button and select the file that starts with "AP_...".

10. Click the "CP" button and select the file that starts with "CP_...".

11. Click the "CSC" button and select the file that starts with "HOME_CSC_..." (Selecting CSC_... will wipe your data!).

12. Turn off your phone.

13. Boot into Download Mode by holding both Volume Up + Volume Down buttons and then connecting it to your PC.

14. After booting into Download Mode, press the Volume Up button to continue.

15. Back to Odin, click "Start".

16. The flashing process will be over when "PASS" is shown in Odin and your phone reboots. You may close Odin and disconnect the phone from your PC then.

17. Congrats! You have successfully flashed the latest update to your device.

18. After your phone is on, turn it off again.

19. Boot into Recovery Mode by connecting to your PC and holding Volume Up + Power Button (+ Bixby Button).

20. Navigating with the Volume Buttons and selecting with the Power Button, go to "Wipe cache partition".

21. Select "Yes".

22. Select "Reboot system now".

Links:

Odin 3 by Samsung:

Index of /

Frija by invmini:

[Tool] Frija - Samsung firmware downloader/checker

* * * PLEASE UNDERSTAND WHAT YOU ARE INSTALLING TO YOUR DEVICES AT ALL TIMES AND ME AND THE DEVELOPER ARE NOT RESPONSIBLE FOR ANY SORT OF DAMAGE TO YOUR DEVICE * * * Hey Guys :) Frija is a new tool (successor of now depreciated tool SamFirm)...

xdaforums.com

CSCs Cheat Sheet:

List of Samsung Galaxy CSC Country Specific Product code and region they belong to

List of CSC Country Specific code for Samsung Galaxy & various countries, regions, network carriers, model numbers, variants phone belong to.

www.androidsage.com

Thank you for your support and I hope I helped you!