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aqui la imagen y el proceso exitoso de la Liberacion del J2 Pro modelo J250M , en mi caso es de Tigo - Bolivia
solo activar ADB y tener creditos en la z3x
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-J250M
Selected port: COM23 USB Serial Port
Software version: 32.7
Checking Login and Password... OK
Ballance: 35 crd.
You have 35 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J250M
Android version: 7.1.1
PDA version: J250MUBU1ARB1
CSC version: J250MUWM1ARC1
Phone version: J250MUBU1ARA1
Product code: SM-J250MZKABVT
CSC country code: Bolivia
CSC sales code: BVT
Phone SN: R28K506XNKH
IMEI: 3533xxxxxxxxxx
HW version: MP0.900
RF cal date: 2018.05.04
Chip name: MSM8937
Modem board: MSM8917
Security patch: 2018-01-01
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... COM6 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Freeze code: 385xxxxx
NET lock: 169xxxx
SUB lock: 00000000
SP lock: 00000000
CP lock: 00000000
For check lock status: *#7465625#
solo activar ADB y tener creditos en la z3x
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-J250M
Selected port: COM23 USB Serial Port
Software version: 32.7
Checking Login and Password... OK
Ballance: 35 crd.
You have 35 credit(s) left. This operation takes 5 credits.Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-J250M
Android version: 7.1.1
PDA version: J250MUBU1ARB1
CSC version: J250MUWM1ARC1
Phone version: J250MUBU1ARA1
Product code: SM-J250MZKABVT
CSC country code: Bolivia
CSC sales code: BVT
Phone SN: R28K506XNKH
IMEI: 3533xxxxxxxxxx
HW version: MP0.900
RF cal date: 2018.05.04
Chip name: MSM8937
Modem board: MSM8917
Security patch: 2018-01-01
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... COM6 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Freeze code: 385xxxxx
NET lock: 169xxxx
SUB lock: 00000000
SP lock: 00000000
CP lock: 00000000
For check lock status: *#7465625#
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