[Araltd]

Checking Login and Password... OK
Ballance: 50 crd.
Waiting ADB device... OK
Reading phone info...
Model: SM-G955U
Android version: 7.0
Product code: SM-G955UZKAATT
Phone version: G955USQS1AQF7
PDA version: G955USQS1AQF7
CSC version: G955UOYN1AQF7
CSC country code: USA
CSC sales code: ATT
HW version: REV1.0
Phone SN: R38J6061***
Chip name: MSM8998
Modem board: MSM8998
Security patch: 2017-06-01
RF cal date: 2017.06.10
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... COM25 detected
Reading data from phone... error (3)
Done with Samsung Tool PRO v.28.8.1

I've tried several times, but each time I try - I get the above error (3) while reading data from phone. Phone goes into Modem Crash mode, and stays there because Z3X just time's out.

Can anyone help. THANKS.