here is a way to flash your samsung if it is not working good or you wan't to erase everything , 

Follow this steps:

Step 1: Download and install Samsung USB Driver on your computer (if Samsung USB Driver is already installed on your computer,  (SKIP this step).


USB Logo

Step 2: Download and extract Odin Downloader on your Computer (if you already have Odin Downloader  (SKIP this step).

Odin Logo

Step 3: Download and extract Samsung Stock Firmware (4 files) on your computer. After extracting the firmware you will b...
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