Unable to Unlock g955u

i try unlock G655u T-Mobile But same error

flash other firmware but same error .

Chimera Mobile Phone Utility version: 22.45.0856 @ 2019-10-03
Printing phone history


Unlock phone started
Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G955U
Sales Code: TMB
Country Code: USA
Timezone: America/New_York
Android Version: 9 [PPR1.180610.011] [SDK 28]
Build Date: Thu Jul 4 22:27:04 KST 2019
PDA Version: G955USQU6DSG7 [july 2019, rev7]
Phone Version: G955USQU6DSG7 [july 2019, rev7]
CSC Version: G955UOYN6DSG7 [july 2019, rev7]
Product Code: TMB
HIDSw Version: G955USQU6DSG7/G955UOYN6DSG7/G955USQU6DSG7/G955USQU6DSG7
Board Platform: MSM8998
Modem Platform: MSM8998
Serial Number: R28J40SRELD
Imei: 357758080710538
Unique Number: 988919483044324457
Connections: AT,MTP
Battery Status: 3.83V (30%)
Network Type: GSM
SIM Status: NETWORK_LOCKED
Multisim Config: SS
Knox Version: v30
Warranty Bit: 0
Security Patch: 2019-07-01
Data Encryption State: encrypted
Checking diagnostic mode availability...
Appropriate serial port is not available.
1. On the dial window, enter *#0808# 2. Select DM+MODEM+ADB 3. Click the Ok on phone display 4. Wait a few seconds until the diag port is initialized 5. Click Ok button
Diagnostic mode available on port SAMSUNG Mobile USB Serial Port (COM146)
Reading data...
Reading data is in progress.
Preparing...
Restarting phone.
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!
Restarting phone.
Waiting for ADB connection. Be patient! Do NOT disconnect the phone!
The phone will restart in upload mode, this is normal operation, do not worry!
Switching to upload mode. Be patient! Do NOT disconnect the phone!
Waiting for upload interface...
Waiting for upload interface. Be patient! Do NOT disconnect the phone!
Upload interface: SAMSUNG Mobile USB Modem (COM15)
Reading data...
Reading data is in progress. Be patient! Do NOT disconnect the phone!
Unable to unlock.
Finished at local time: [10.03.19 18:19:16]
WorkID: 75125373

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