J250G U3 unlock not done....

UNLOCK INSTRUCTIONS:
Unlocking with original MSL code:
Warning! Knox warranty must be active (0x00)!
If you have it voided (0x01(void)), then you can't unlock this phone with MSL.
1. Phone must be powered on.
2. Run dialer and type *#0*# (service mode will appear).
3. Connect the phone to UART cable, choose correct COM port in port settings.
4. Press 'Unlock' button.
5. Paste MSL code in new opened window and press 'OK'.

Reading codes using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' 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-J250G
Software version: 33.8

Checking Login and Password... OK
Ballance: 20 crd.
You have 20 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J250G
Android version: 7.1.1
PDA version: J250GDXS3ARG1
CSC version: J250GOLC3ARG1
Phone version: J250GDXS3ARG3
Product code: SM-J250GZKAXTC
CSC country code: PHILIPPINES
CSC sales code: XTC
Phone SN: R28K51PNQ4Z
IMEI: 3557380904358XX
HW version: MP0.900
RF cal date: 2018.05.18
Chip name: MSM8937
Modem board: MSM8917
Security patch: 2018-07-01
Boot Warranty bit: 0
Rebooting phone... OK
Waiting ADB device... OK
Rebooting phone... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait...
Start... OK
Initialization... OK
Generate and check client proof... OK
Verify proof by client... OK
Reading data from phone... OK
Searching Ramdump interface... COM62 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... error (0)
please update phone firmware
Done with Samsung Tool PRO v.33.8