How to Restore Original Firmware on Samsung Galaxy J7
In this tutorial I will show you how to update or restore original firmware on Samsung Galaxy J7 J700F (Android 5.1.1) with Smart Switch application.You can use this method if you have issues with your phone software.
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This method is 100% free!
For this method you need a PC, internet connection, micro USB data cable and Samsung Smart Switch software.
Samsung Smart Switch download page
http: //www.samsung.com/ro/support/sma ...
Warning! You do this at your own risk! Make sure your phone battery is fully charged!
Better remove the SIM card and memory SD card from your phone before this operation!
If you reset or update your phone, all your data may be lost, so it's good to do a full backup before!