G950U Reading data from phone... error (3)

[rea1One]

Checking Login and Password... OK
Ballance: 50 crd.
Waiting ADB device...
Please, allow USB debugging on phone... OK
Reading phone info...
Model: SM-G950U
Android version: 7.0
Product code: SM-G950UZSAATT
Phone version: G950USQU1AQC9
PDA version: G950USQU1AQC9
CSC version: G950UOYN1AQC9
CSC country code: USA
CSC sales code: ATT
HW version: REV1.0
Phone SN: R38J405WPER
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2017-03-01
RF cal date: 2017.04.07
IMEI:
Rebooting phone... OK
Waiting ADB device... OK
Rebooting phone... OK
Waiting ADB device... 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... COM24 detected
Reading data from phone... error (3)

[rea1One]

it works now after resetting the phone.

Operation: Read Codes via Server
Selected model: SM-G950U
Software version: 29.0

Checking Login and Password... OK
Ballance: 50 crd.
Waiting ADB device... OK
Reading phone info...
Model: SM-G950U
Android version: 7.0
Product code: SM-G950UZSAATT
Phone version: G950USQU1AQC9
PDA version: G950USQU1AQC9
CSC version: G950UOYN1AQC9
CSC country code: USA
CSC sales code: ATT
HW version: REV1.0
Phone SN: R38J405WPER
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2017-03-01
RF cal date: 2017.04.07
IMEI:
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... COM24 detected
Reading data from phone... OK
Calculating... OK
Searching server... OK
Waiting for server answer... OK
Freeze code: 07179574
NET lock: 48248357
SUB lock: 00000000
SP lock: 00000000
CP lock: 00000000
For check lock status: *#7465625#

Done with Samsung Tool PRO v.29.0