Samsung Tool PRO v.26.6 still can’t write cert on n920t PG1

Phone must be rooted!
If the software can’t root the phone automatically,
then you must root your device manually.
1. Power on the phone.
2. Tap 7 times on ‘Build number’ in ‘Settings’-‘About phone’ to enable ‘Developer options’,
go to ‘Settings’-‘Developer options’ and enable ‘USB debugging’.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press ‘Read EFS’ button to read backup or ‘Write EFS’ to restore.
6. Press ‘Read CERT’ button to read certificates or ‘Write CERT’ to restore.
7. Press ‘Write NV DATA’ if you need to restore NV backup.

Operation: Write CERT
Selected model: SM-N920T
Software version: 26.6

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: RF8GA0M5FJB
Modem board: SHANNON333
RF cal date: 20151007
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.26.6