Thanks to the developer Xda there is a new tool dedicated to the rescue which is appreciated especially for its convenience and ease of use.
The application called SA Manager allows you to make both the backup or restore the EFS partition than the one on the part of Modem .
Here is how to use it (you will need root permissions ) .
- Download the Annexes to the official page of the file Xda SAManager x.xx.apk
- Install the app as simple apk .
- Start menu programs SA Manager and grant root privileges.
- From the main screen you can access the functions of backup and restoreEFS folder or that of the MODEM .
- The archives will be stored in folder SAManager the internal memory (/ sdcard).
The tool is under development and not all Samsung models are supported yet.