[Tool] How To Backup EFS Folder On Samsung Android Devices (Method 2)

This tool is especially made for Samsung Android Devices and it also supports non-Samsung devices.  The purpose of the tool is to backup the EFS folder which contains crucial information about the phone’s IMEI number.  Backing up this folder is one of the essential steps to do before trying to update to official stock firmware or custom firmware to avoid from the common problem of getting. “Not Registered On Network“, which corrupts the EFS Partition.

This guide will teach you about EFS Partition.


Before the backup process there are some requirements that you should do:

– Download EFS Professional tool (Link)

– Download Busybox app from Play Store (Link).

– Enable USB Debugging in Settings> Developer Option > USB Debugging.


If you can’t see “Developer Options”, then go to Settings > About Device > Build Number and tap on it for about 7 times until the message “Developer mode has been turned on” shows up.  Then go back to Settings > Developer Option > USB Debugging to turn it on.

Developer Option 1

Developer Option 2

1. Open Busybox app and give it root permissions.   Then you should see the main screen of the app.

Backup EFS Folder 1

2. Tap on “Install” button to install required files for BusyBox to work.   The below screen should show up upon successful installation:

Samsung EFS Tool 1

3. On your PC, extract the EFS Professional tool using (winrar) and open it.

EFS Folder Backup 2

4. Double-click on the yellow icon “EFS Professional.exe”.

EFS Folder backup 3

5. The below screen will open up, click on “EFS Professional”.

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Rawand Haidar

Rawand is Petroleum Engineer.He is Super high on Android. Rawand has been blogging since 2011, written more than 150 articles including tutorials, news, reviews about Android. He is interested in all things Android. Follow Me on Twitter

1 Response

  1. I’ve Samsung Galany Core GT-I8262, In which at least some 25 third party Apps are not uninstalling, I tried to uninstall but it didn’t they aren’t system or google apps but like system/google apps they are not uninstalling causing bug occuping space hanging phone switching wifi on and more, I can only DISABLE them, I’ve formatted my phone but the problem exits, Anyone help please, I also want to flash the STOCK ROM by which the problem will be wiped but don’t know how to do flashing with orignal FIRMWARE without Rooting the phone, From where orignal FIRMWARE can be got???
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