Backup/Restore EFS/IMEI on Samsung Galaxy S6 & S6 Edge [how to]

Here’s How To Backup/Restore EFS/IMEI on Samsung Galaxy S6 & S6 Edge!

Galaxy S6 and S6 Edge are now accessible for the users all across the globe. Samsung has learnt a lot from its past mistakes. Result is pretty prominent in the form of the all-metal and the beautiful S6 & S6 Edge. Samsung once again has won all its lost respect and provided the users many reasons to buy a new Galaxy S6 or S6 Edge. Both of the devices come with great specifications on the board. Once you get your hands on this device, you will not be able to resist yourself from experimenting on this device and check out what your new Galaxy S6 and S6 Edge are capable of. As the device gets older, there will be loads of custom stuff available which will allow you to test different aspects of your device. This custom stuff includes custom ROMs, MODs, tweaks, custom recoveries etc.

Manufacturers forbade their customers from loading custom stuff on their devices since it involves many complications and risks. But it really isn’t harmful if you have taken all the pre-cautionary measures before flashing anything custom. One of the greatest risks involved in tweaking the Samsung Galaxy device is the corruption of EFS partition. EFS partition, which stands for Encryption File System includes all RADIOS, MAC addresses of your device including those of WiFi, Bluetooth. It also includes Network parameters and most importantly it contains the IMEI partition information of your device. You must have got an idea about drawbacks of messing up this partition. Damaging the EFS partition will simply wipe up the communication capabilities of your device. Your device won’t be able to use the “Phone” feature anymore and it will result in showing “NULL IMEI” or simply “0000” as IMEI.

If you’re wondering how the EFS partition can get corrupt, this only happens because of flashing an invalid file. An invalid file that may contain invalid bootloader and modem. Also, attempting a firmware downgrade also causes null imei issue. It is never recommended to flash an older firmware over a newly installed firmware. Backing up EFS partition will put you at ease. Even if you have caused the IMEI of your device to go null, simply restoring the EFS will bring the network capabilities of your device back.

The fear of EFS partition restricts many Samsung Galaxy owners from unleashing the power their device has got. But there is nothing to worry about if you do the things in a right way. Backing up the EFS partition makes you safe and secure and all good to flash any custom ROM or MODs on your device. There’s a number of methods available for backing up and restoring EFS partition on your Samsung Galaxy devices. Some methods are device specific while some work for many devices. The good news for Galaxy S6 and S6 Edge owners is, they can backup and restore EFS partition of their device now using Wanam’s EFS Backup application. It won’t take more than a minute to backup the EFS partition and then you’re all set to roll in the open source world of Android Lollipop. In case you are wondering how you will be able to use this application and backup the EFS partition of your S6 or S6 Edge, following tutorial is going to help you.


Here are some pre-requisites and precautions.

How to Backup EFS/IMEI partition on Samsung Galaxy S6 or S6 Edge

  1. Make sure that you’ve rooted your device.
  2. Now download and install Wanam’s Partitions Backup application on your device.
  3. Open the application now and grant SuperSu rights.
  4. Now click the small tool settings button at the top besides the information button and select the format in which you want to backup the EFS partition. (select .tar and .img formats)
  5. Now from the partitions list select EFS and RADIO  partition.
  6. Now tap the small arrow in the circle at the lower right corner.
  7. It will prompt a confirmation message, tap BACKUP here.
  8. That’s all. You will have your EFS files in the “Partitions Backup” folder located in your internet storage.

How to Restore EFS/IMEI partition on Samsung Galaxy S6 or S6 Edge

  1. If you have accidentally corrupted your EFS partition, you can simply restore it using the same application.
  2. Make sure that you have already backed up the EFS partition in .img format.
  3. Now open the partitions backup application and tap the small options button at the top right corner.
  4. Select restore a partition, and then select your radio and efs.img files from the partitions backup folder inside your internal storage.
  5. Once you’ve selected the files, follow on-screen instructions to restore your lost IMEI.
  6. That’s all.

Screenshot_2015-05-05-00-24-22 Screenshot_2015-05-05-00-26-56Screenshot_2015-05-05-00-26-48

Q: How To Change IMEI Samsung S6 :

  1. Go to your settings in Samsung S6&S6 Edge and enable the USB debugging mode.
  2. Now Turn off your device.
  3. Connect your device with your PC.
  4. Download the EFS Restorer Express
  5. Open EFS restore express and run the EFS-BACK.BAT file.
  6. After that you have to choose the method to restore EFS via Odin.

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