A700fd reset msl error

while resetting msl for writing cert i am getting this error, please help,


Operation: Reset MSL
Selected model: SM-A700FD
Selected port: COM225 SAMSUNG Mobile USB Serial Port
Software version: 33.8

Reading phone info...
Reading IMEI... OK
IMEI: 3599260xxxxxxxx
Reseting MSL security... error (1)

Done with Samsung Tool PRO v.33.8