j327p unlock failed

Waiting ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SM-J327P
Android version: 6.0.1
Product code: Not Active
Phone version: J327PVPU3AQJ1
PDA version: J327PVPU3AQL3
CSC version:
CSC country code:
CSC sales code:
HW version: J327P.03
Phone SN: 00000000000
Modem board: MSM8917
Security patch: 2017-12-01
RF cal date: 2017.11.14
IMEI: 3526180939xxxxx
Writing AT RIL... OK
Initialization AT RIL... root required
Checking Super user right... true
Initialization AT RIL... OK
Unlocking... error
Done with Samsung Tool PRO v.30.9

Waiting ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SM-J327P
Android version: 6.0.1
Product code: Not Active
Phone version: J327PVPU3AQJ1
PDA version: J327PVPU3AQL3
CSC version:
CSC country code:
CSC sales code:
HW version: J327P.03
Phone SN: 00000000000
Modem board: MSM8917
Security patch: 2017-12-01
RF cal date: 2017.11.14
IMEI: 3526180939xxxxx
Writing AT RIL... OK
Initialization AT RIL... root required
Checking Super user right... true
Initialization AT RIL... OK
Reading SPC... OK
SPC/MSL code: 697650
Done with Samsung Tool PRO v.30.9

how to downgrade fw to unlock? or how to unlock via SPC/MSL code: 697650?