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http://www.youtube.com/watch?v=xu_k7A9pevw

Procedure to Recover IMEI of Samsung Galaxy S2 Android Phone:

  • Open the “Root Explorer” application in your phone and backup the folder which is named as “EFS” to your SD card and another copy you can store it in your computer.
  • Now after ensuring that you have backed up the EFS Folder, delete the “EFS” folder from the root of your phone using the Root explorer.
  • Now, reset the phone and then go to the root via Root explorer and you will see that the EFS Folder still exists. This EFS folder is the new one and not the old one which is automatically generated by the Android OS.
  • In the EFS Folder, delete the file “nv_data.bin”, “nv_data.bin.md5″.
  • Go to the EFS Folder which you have backed up in your device’s SD Card, copy the “IMEI” folder to the EFS Folder in your phone and copy the “.nv_data” file in the EFS Folder at the root of the phone using the root explorer
  • Now, make another copy of “.nv_data” file in the EFS folder of your phone, so by now you will have the two copies of “.nv_data” in the EFS Folder
  • Now, rename one of the”.nv_data.bin” to “nv_data.bin” and another one to the “nv_data.bin.bak”
  • Up next in your PC, open the command prompt at the ADB tool path or run the terminal in your phone to enter the below mentioned commands.

adb ****l ( use this command of you use ADB, if you’re using terminal, skip this line )
su ( ALLOW THE MESSAGE CAME AT YOUR PHONE’s DISPLAY BY SUPERUSER PROGRAM )