g955u bit6 Tmobile

hi


s8+ bit6 cant unlock i all ready use combination modem and eng_ modem

Platform: Samsung Android
Selected port: COM142
Selected model: SM-G955U
Operation: Unlock
Searching for a phone. Please wait...
Detected phone model: SM-G955U
Firmware compiled date: Thu Jul 4 22:27:04 KST 2019
PDA version: G955USQU6DSG7
CSC version: G955UOYN6DSG7
SW version: G955USQU6ASG1
Build number:
Phone SN: R58JA1LNAEE
Android version: 9 (PPR1.180610.011)
Sales code: TMB
Country: USA
HW platform: msm8998
HW Chip: unknown
HW Modem: MSM8998
Security patch level: 2019-07-01
SIM 1 status: absent
Codename: dream2qltesq
Connecting to modem port...
Found phone on COM142
Reading IMEI...OK
-----------------------------------------------------------------------------------
Connecting to server...OK
Checking smart card...OK
Username: marceloolivares77
Authorizing...OK
Checking balance...OK
Checking operation...OK
Your balance: 116 credits.
-----------------------------------------------------------------------------------
Sending device information...OK
Rebooting phone in Upload Mode...
Searching for a phone. Please wait...OK
Reading data...OK
Rebooting phone
Searching for signatures...
error 0x00A3
Please write modem from proper combination firmware and try again!
Phone unlocking failed:confused:
Performed by 2.8.3.3 Software version.


wath else can i do??


Thanks