g920i problem

Searching Samsung modem… detected COM208
Reading phone info… OK
Model: SM-G920I
AP version: G920IDVU3EPIF
CSC version: G920IDOR3EPIF
CP version: G920IDVU3EPIF
Product code: SM-G920IZWADOR
Phone SN: RF8G927J93Y
Unique number: 0715F7B00F9xxxxxx
Reading IMEI… OK
IMEI: 3598780664xxxxx (SIGN: OK)
Reseting MSL… error (0)

Done with Samsung Tool PRO v.26.9

Operation: Unlock
Selected model: SM-G920I
Software version: 26.9

Searching Samsung modem… detected COM208
Reading phone info… OK
Model: SM-G920I
AP version: G920IDVU3EPIF
CSC version: G920IDOR3EPIF
CP version: G920IDVU3EPIF
Product code: SM-G920IZWADOR
Phone SN: RF8G927J93Y
Unique number: 0715F7B00F9xxxxx
Reading IMEI… OK
IMEI: 3598780664xxxxx (SIGN: OK)
Reading data from phone… error (0)

Done with Samsung Tool PRO v.26.9

Operation: Read Codes
Selected model: SM-G920I
Software version: 26.9

Searching Samsung modem… detected COM208
Reading phone info… OK
Model: SM-G920I
AP version: G920IDVU3EPIF
CSC version: G920IDOR3EPIF
CP version: G920IDVU3EPIF
Product code: SM-G920IZWADOR
Phone SN: RF8G927J93Y
Unique number: 0715F7B00F96333A
Reading IMEI… OK
IMEI: 3598780664xxxxx(SIGN: OK)
Checking hash file… OK
Reading data from phone… error (0)
Try downgrade modem if possible
Done with Samsung Tool PRO v.26.9

please suport help
thanks