SM-G925A aT&T POSIBLE?
 

Searching Samsung modem... detected COM114
Reading phone info... ok
Model: SM-G925A
AP version: G925AUCS4CPF1
CSC version: G925AATT4CPF1
CP version: G925AUCS4CPF1
Product code: SM-G925AZDAATT
Phone SN: R38G5093QBY
Unique number: 04157DF48DF71C24
Reading IMEI... ok
IMEI: 359706060760237 (SIGN: OK)
Checking hash file... ok
Reading data from phone... error (0)
Try downgrade modem if possible