G930T unlocking failed

Unlock4samsung Friday, May 4, 2018

Operation: Unlock
Selected model: SM-G930T
Software version: 31.5.1

Checking Login and Password... Listo
Ballance: 50 crd.
You have 50 credit(s) left. This operation takes 10 credits.Continue? Si
Waiting ADB device... Listo
Leyendo información del teléfono ...
Modelo: SM-G930T
Android version: 7.0
PDA version: G930TUVS4BQC1
CSC version: G930TTMB4BQC1
Versión del telefono: G930TUVS4BQC1
Código del Producto: Not Active
Código de país CSC: USA
Código de Venta CSC: TMB
Phone SN: R28H83N8FZN
IMEI: 000000000000000
HW version: MSM8996.00
RF cal date: NONE
Chip name: MSM8996
Módem: MSM8996
Security patch: 2017-03-01
Boot Warranty bit: 0
Reiniciando teléfono ... Listo
Waiting ADB device... Listo
Reiniciando teléfono ... Listo
Waiting ADB device... Listo
Waiting for device to become ready... Listo
Initialization zTool... Listo
Running zTool, please wait...
Start... Listo
Initialization... Listo
Generate and check client proof... Listo
Verify proof by client... Listo
Lectura de datos desde el teléfono ... Listo
Rebooting to upload... Listo
Searching Ramdump interface... COM24 detected
Lectura de datos desde el teléfono ... Listo
Calculando... error (4)
Done with Samsung Tool PRO v.31.5.1