This is remote service with WINDOWS computer only, or bootcamp on mac.               

 Make sure you have latest drivers        LINK          

Install FLEXIHUB       LINK             

            Open flexi, Insert token to  "token" field -              5b4bee0c717fc7e3ac2b04b511e268183f90e968

Connect erased phone to comp, in device field write your comp name and samsung com port number, make order.
         Good luck