Samsung Galaxy A5 (2017) A520F Remove frp

Samsung Galaxy A5 (2017) A520F Remove frp Android 7.0 nougat all security u1 u2 u3 u4

1. flash combination firmware of Samsung Galaxy A5 (2017) A520F to enable adb .
2. 
   
3. flash stock firmware bt + ap + cp + home_csc not csc (HOME_CSC contains instruction only to allow wipe of cache not wipe the DATA )
4. 
   
5. after flash stock with out wipe data (adb must enabled) enable oem lock in devloper setting and make full reset .
6. 
   
7.  frp reset success.

 ROM COMBINATION

 ROM STOCK