Error Here is my log:
Checking Login and Password... OK
Balance: 30 crd.
You have 30 credit(s) left. This operation takes 6 credits. Continue? Yes
Waiting ADB device... OK
Reading phone info...
Model: SM-G955U
Android version: 9
PDA version: G955USQU8DUD3
CSC version: G955UOYN8DVC3
Phone version: G955USQS8DTJ2
Product code: SM-G955UZKATMB
CSC country code: USA
CSC sales code: TMB
Carrier ID: TMB
Phone SN: R28J72RS3KM
IMEI: 355980083748016
HW version: REV1.0
RF cal date: 2020.04.15
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2020-12-01
Boot Warranty bit: 0
SIM State: ABSENT
Waiting for device to become ready... OK
Initialization zTool... OK
Running zTool, please wait... OK
Trying to enable diag port... OK
Waiting ADB device... OK
Waiting for device to become ready... OK
Searching Samsung diag port... detected COM107
Reading IMEI... OK
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... OK
Rebooting to upload... OK
Searching Ramdump interface... COM3 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 Loader... OK
Running zTool, please wait... error (1 )
Retry 1...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 2...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 3...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 4...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 5...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 6...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 7...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 8...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 9...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)
Retry 10...
Initialization zTool Loader... OK
Running zTool, please wait... OK
Loading... OK
Initialization zTool... OK
Running zTool, please wait... OK
Reading data from phone... error (4.12.0)