Category: Backup and Restore Tutorials

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[Tool] How To Backup EFS Folder On Samsung Android Devices (Method 2)

This tool is especially made for Samsung Android Devices and it also supports non-Samsung devices.  The purpose of the tool is to backup the EFS folder which contains crucial information about the phone’s IMEI number.  Backing up this folder is one of the essential steps to do before trying to update to official stock firmware or custom firmware to avoid from the common problem of getting. “Not Registered On Network“, which corrupts the EFS Partition.