How to Downgrade Android 11 to Android 10 on Samsung Galaxy M30s SM-M307F

Installed a new version of Android on your phone and want to roll it back? Here's how you can downgrade again.

Generally, it's always best to keep your devices up to date. But unfortunately, updates can sometimes break software, change features in unwanted ways, or bring bugs with them that the manufacturer may not fix.

Switching back to a previous version of Android is generally not recommended, but it isn't impossible. Here's how you can do it.

Download and Terms

You can go back to Android 10 if the binary version is same between Android 11 ROM and Android 10 ROM.  Last android 10 update SM-M307F is binary 4 and latest Android 11 update also binary 4 too.

1. Enable Developer Options: go to Settings -> About device. Tap 7 times on Build number to enable Developer options.
2. Download and Extract SAMSUNG ODIN
3. Download Samsung Galaxy M30s SM-M307F (Android 10 firmware)
4. Extract (unzip) the firmware file ( AP, BL, CP, CSC )
5. Make sure to backup all your important data!

Notes / Warning!

Use at your own risk, I’m not responsible for bricking your device.

Using the incorrect file may brick your device.

Make sure to backup your important data.

Instructions: Downgrade Samsung Galaxy M30s SM-M307F from Android 11 to Android 10

This guide is for Galaxy M30s. The process should work on most Samsung phones that can be downgraded, but every device is different. Some follow a different set of instructions, or require different tools.

1. Enter download mode - Power off the phone, Press and hold Volume Down + Volume Up keys together then while pressing these keys connect the phone to PC with USB, release all keys when Download Mode appears. 
2. Open ODIN and check “Auto Reboot” and “F.Reset Time” in Options!
3.  Add the firmware files AP, BL, CP and CSC.
4. Click the start button, sit back and wait few minutes
5. Setup the Phone!

Your phone should now restart. If everything went well, you should now be running a downgraded version of Android. You'll need to set your phone up again from scratch. 

If you encounter any problems, ask your doubts on our telegram discussion group to solve them.

Conclusion

That’s all about How to Downgrade Android 11 to Android 10 on Samsung Galaxy M30s SM-M307F.

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