Nandroid backups are usually performed in recovery mode. This means you would have to turn off your phone and reboot in recovery mode, which wastes a whole lot of time rebooting and a lot more time offline.
This tool gives you an ability to make a backup of your phone to your PC using the latest TWRP 3.1.0 Recovery. This is a simple handy tool if you want to make a backup of your phone to your PC and you don't want to deal with ADB commands.
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