How to repair DRK of Samsung Galaxy J7 SM J700M SM J700H SM J700T without root
1st. Flash Combination2nd. Open Octupus Samsung Tool and select SM-J700T model
3rd. Click on Repair DRK with UART cable.
4th. connect UART cable and dial #0#
its done 100%
and finally flash full firmware.
its 100% tested and permanent repair. see video proof.