Samsung S7 android 6.0 FRP remove solution whit Z3x box
Open z3x box pro tool V26.9 or latest select G930f and go to unlock option.
Press volume down,home key and power key for download mode.
Connect mobile to PC install driver if needed then press Reset frp/React/EE.
Process start and finish then mobile reboots.
You can see Waiting ADB device on pro tool then you just tap on start option on mobile.
Connect wify then press next and tap agree terms and condition now ADB turn on Process start and finish.
Go back to your mobile and press next again your FRP completely removed.