tap samsung t377a unlock not done

Reading phone info...
Model: SM-T377A
AP version: T377AUCS3BRB1
CSC version: T377AATT3BRB1
CP version: T377AUCS3BRB1
Product code: ATT
Phone SN: R52K40BX01K
IMEI: 359768085186541
Unique number: CAJ00D0555FD515
Reading IMEI... OK
IMEI: 359768085186541 (SIGN: OK)
Reading data from phone... error (0)
Try downgrade modem if possible

Done with Samsung Tool PRO v.34.8