SM-J321az frp done using SM-J320zn
 

Operation: Reset FRP/React/EE
Selected model: SM-J320ZN
Software version: 30.8

Searching Samsung USB Flash interface... COM3 detected
Setup connection... OK
Reading PIT from phone... OK
Searching FRP lock... OK
Erasing FRP lock... OK
Reset done
For complete reset FRP, goto 'Backup and reset' and make 'Factory data reset'

Done with Samsung Tool PRO v.30.8

this works for me too... Thank you very much

its 1000% working solution

working 100% tnx bro

work for me thanks bro