How to backup / restore Samsung Galaxy Note 2 EFS?

Feel free to ignore this article if you did not root Samsung Galaxy Note 2. Because you can’t backup and restore Samsung Galaxy Note 2 EFS without root access. And you don’t need to worry about EFS at all when not rooted.

What is EFS? It is a place that stores your Android smartphone important data like Wi-Fi, Bluetooth MAC address and IMEI (nv_data.bin). Do take note if you are a frequent ROM / firmware flasher or rooted your Android phone. Install unstable or poorly cooked ROM might cause EFS partition to be corrupted or missing. This will make your Samsung Galaxy Note 2 fail to make voice call due to missing IMEI number. Therefore better to make a backup of your Samsung Galaxy Note 2 EFS partition.

Backup Samsung Galaxy Note 2 EFS

There is not much backup / restore EFS tool for Samsung Galaxy Note 2 yet. No Android application to backup / restore EFS on the phone directly. However, there is a tool for Windows, Linux and Mac OS. Basically, you need to enable USB debugging mode first. Then use the tool to backup Samsung Galaxy Note 2 EFS. By the way, better to keep another EFS backup copy on your cloud storage. That’s it. Finally, restore EFS when needed…

Download EFS backup / restore tool for Samsung Galaxy Note 2 here.

  • tomas

    hi Jayce Ooi

    thanks for tutorial. i have already lost my imei of galaxy note 2. its corrupted.. and i never had any such backup of efs directory…

    my question is, by using the tool above can i RESTORE only (if i never created a backup with the tool) ?

    • Sorry tomas, you can’t restore without a proper backup.

  • tomas

    hi Jayce Ooi

    well, if it cant be, will you help me to find a genuine way to recover imei (eventually efs) somehow….

  • daniel

    im in the same boat as you guys. my phone reset a bunch of times and now my meid and imei and all that is gone. what know? didn’t know to make a backup of efs. so i don’t have one, but i have all the meid codes on my box and on the phone.

  • Kristian

    Right Bad news and good news. No you cant recover your IMEI if its been lost im afraid its gone for good, however the note 2 does have a failsafe that it crashes if something tries to erase EFS (Variant Dependant) Go to XDA download stock from from your phone, boot into recovery. *FORMAT EVERYTHING* yes you loose everything, boot into download mode and flash stock image with odin. If that doesnt fix it your going to have to find a copy of samsung toold and re write your IMEI, **THIS IS ILLEGAL** and you do this at your own risk. Your IMEI is under the battery on back of phone or on the box it came in. Hope this helps.


  • Minal

    tnQ tnQ bro…when note 2(n7100) 4.3 firmware update ….then all time i’ll do this process…it was safe ????????? and imei and baseband show perfect…

    • Should come soon but no idea on exact date. No issue to backup.