To achieve this we have two different methods :
Method 1: Using a root file explorer
To restore the backup of our EFS folder , we will in the same way we do such copy.
The process is the same but in reverse, you must copy the folder EFS we have saved in a safe and copy using Root Explorer , ES File Explore similar ro the path / efs .
With this program, in addition to releasing the Samsung Galaxy S, S2 and S3 , we can restore a very comfortable EFS folder.
To restore only have to copy the EFS folder we saved to the pathGalaxy_S_Unlock the sdcard and click on the tab Unlock and select the last option of all, the one called restore efs folder saved
Then we reboot into Recovery Mode and perform the steps I indicated in the third title of this post.
Method 2: Using Galaxy S Unlock
Galaxy S Unlock , is a free application that can be found in the Play Store , which will serve to release the terminal family of Samsung Galaxy S .
After this we will have to enter the Recovery Mode and do the following Wipes:
Final step from the Recovery Mode
- Wipe data factory reset
- Wipe cache partition
- Advanced / wipe dalvik cache
With this and restart the terminal behind we restored the EFS folder and we will have our IMEI available