This is simple EFS backup tool. We are very well knowing about what EFS is and why it is MUST to backup on every rooted device. If you don't know then Read this.
Right now this tool support only SM-910U and support to other variant will be added when it is available.
XDA version (free)- Attached at end of this post.
Difference between Free/Play store
-Both version makes backup in same format and no difference in backup.
-Free version will save file in MyEFS and if you make next backup it will replace older one. While play store version everytime creates new folder with date ,Time and your IMEI stamp so you can keep multiple backup as well no confulsion about which backup is made when and on which device. Also it makes copy of build.prop so you can get idea you were on which ROM when backup created)
-On free version you have to select option according your device model, if you select wrong your EFS backup will be wrong On play store version it will auto detect your model and make backup accordingly. In case your model not supported it will give warning msg.
-Play store version give notification in case backup not created OR you select wrong model and will have option to contact developer in such case.
-Weekly Auto backup feature available on play store version.
This tool using generic name of partition block and you can restore with simple adb shell
dd if=/path of backup files/ of=/partition block according your device
1.0 - Initial release for N910U
1.1 - Updated for making backup of other efs related partition as well added support for N910F (all 1.0 user request to make new backup with new version)
1.2 - Added support for N910K
1.3 - Added support for N910C
1.4 - Added support for N910P
1.5 - Added support for N910T and N910G
1.6 - Added support for N910H/R/W8/6W
1.7 - Added support for N910L
1.8 - (Major Update - Recommended for all to update)
-Added support for N9100
-Backup location changed to IntSD/MyEFS for ready to use Pro version (now both have same location)
-Now it removes old backup before creating new backup to insure that created backup is new. still you can check date of created files)
1.9 - Added support for N915G (Note4 Edge)
2.0 - Added support for system less root. New UI.
Dr.Ketan IMEI Tool, ROM for the Samsung Galaxy Note 4
ROM OS Version: 4.4.x KitKat
Last Updated 2017-04-05