g960f unlock error

UNLOCK INSTRUCTIONS:
Reading codes using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone'-'Software information'
to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Read Codes via server' button, write your login and password in window if it will appear.
(Login and password will be saved as default after first input and can be changed in settings.)

Operation: Read Codes via Server
Selected model: SM-G960F
Software version: 37.0

Checking Login and Password... OK
Ballance: 52 crd.
You have 52 credit(s) left. This operation takes 10 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G960F
Android version: 9
PDA version: G960FXXU6CSG8
CSC version: G960FCKH6CSG1
Phone version: G960FXXU6CSG4
Product code: SM-G960FZKAEVR
CSC country code: UK
CSC sales code: H3G
Phone SN: R58K91CP6VX
IMEI: 359664095679627
HW version: MP 0.900
RF cal date: 20180908
Chip name: EXYNOS9810
Modem board: SHANNON360
Security patch: 2019-07-01
Boot Warranty bit: 0
SIM State: NETWORK_LOCKED
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... not found compatible file
Try downgrade modem if possible
Done with Samsung Tool PRO v.37.0