N920T Unlocking error


anyone can help me with this problem?

I’ve tried to write ENGBOOT_N920TPG1.tar file and test failed

tried to write sboot_n920t_oj5.tar and test failed

factory setting for 10 times but still no luck!

this log for unlocking process

Waiting ADB device… OK
Reading phone info…
Model: SM-N920T
Android version: 6.0.1
Product code: SM-N920TZWATMB
Phone version: N920TUVU3DPG1
PDA version: N920TUVU3DPG1
CSC version: N920TTMB3DPG1
CSC country code: USA
CSC sales code: TMB
HW version: REV0.2
Phone S/N: RF8GA22DF2M
Modem board: SHANNON333
RF cal date: 20151022
Checking Super user right… true
Initializating zTool… OK
Running zTool, please wait…
Start… OK
Init… OK
Generate and check client proof… OK
Verify proof by client… OK
Reading data… error (9)

Done with Samsung Tool PRO v.26.5