SM-N960F unlock failed

Operation: Info
Selected model: SM-N960F
Software version: 37.0

Searching Samsung modem... detected COM169
Reading phone info...
Model: SM-N960F
AP version: N960FXXS3CSFC
CSC version: N960FOXM3CSF9
CP version: N960FXXS3CSG1
Product code: INS
Phone SN: RZ8K92JT43W
IMEI: 359447091431072
IMEI2: 359448091431070
Unique number: CE081828C85DA9DE3F7E
Reading IMEI... OK
IMEI: 359447091431072 (SIGN: UNKNOWN)
IMEI 2: 359448091431070 (SIGN: UNKNOWN)

Operation: Read Codes via Server
Selected model: SM-N960F
Software version: 37.0


Checking Login and Password... OK
Ballance: 50 crd.
You have 50 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-N960F
Android version: 9
PDA version: N960FXXS3CSFC
CSC version: N960FOXM3CSF9
Phone version: N960FXXS3CSG1
Product code: SM-N960FZKDINS
CSC country code: India
CSC sales code: INS
Phone SN: RZ8K92JT43W
IMEI: 359447091431072
HW version: MP 0.700
RF cal date: 20180925
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-07-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED,ABSENT
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Searching server... OK
Checking server answer... modem not supported
Searching server... OK
Checking available files... OK
Available CP file for downgrade, try download and flash? Continue? No
Operation aborted
Try downgrade modem if possible