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.)
 
   Unlocking TMB 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 'Unlock TMB 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.)
   
   Unlocking SPR using sever:
 1. Insert not SPR card to the phone and power it on.
 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 'Unlock...' button,  select 'Unlock SPR via Server',    
    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: Unlock
Selected model: SM-G960U
Software version: 36.8

Checking Login and Password... OK
Ballance: 50 crd.
You have 50 credit(s) left. This operation takes 8 credits.Continue?  Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G960U
Android version: 8.0.0
PDA version: G960USQU1ARB7
CSC version: G960UOYN1ARB7
Phone version: G960USQU1ARB4
Product code: SM-G960UZKATMB
CSC country code: USA
CSC sales code: TMB
Phone SN: R28K31MVZYV
IMEI: 353309091562270
HW version: REV1.1
RF cal date: 2018.03.12
Chip name: SDM845
Modem board: SDM845
Security patch: 2018-02-01
Boot Warranty bit: 0
SIM State: ABSENT
Searching Samsung diag port... not found
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... OK
Reading data from phone... OK
Rebooting to upload... OK
Searching Ramdump interface... COM4 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Rebooting phone... OK
Unlock done

Done with Samsung Tool PRO v.36.8

https://youtu.be/MhGOKY3FV1w
https://youtu.be/oTDTAKQ0FFM (Link Private - Link Dự Phòng riêng tư)