SM-N920T Cert File Failed

I am trying to write cert file for SM-N920T and This is what I get.
I am not sure why it won’t work.

Welcome to Octoplus/Octopus Box Samsung software
version 2.2.5
To connect SM-N920T phone you have to perform the
following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
Platform: Samsung Android
Selected port: COM3
Selected model: SM-N920T
Selected file: C:\Users\FishMarket\Desktop\cert-sm-
Detected phone model: SM-N920T
Firmware compiled date: Sat Sep 19 16:43:04 KST 2015
PDA version: N920TUVU2COI5
CSC version: N920TTMB2COI5
SW version: N920TUVU2COI5
Android version: 5.1.1 (LMY47X)
Country: USA
HW platform: exynos5
HW Chip: exynos7420
HW Modem: SHANNON333
Codename: nobleltetmo
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files (x86)\Octoplus
Unknown06-05-2016_19-26-45-.asec file
Checking Certificate file…
Certificate file successfully checked
Deactivating MSL…
Executing exploit…
Exploit has been executed successfully
Writing Certificate…
Performed by 2.2.5 software version

Then it won’t do anything.
IMEI is still same after manually reboot.
Am I doing something wrong?

I also intentionally inserted XXXX at cert file for posting. Real operation had real numbers in it.

Any advice or help will be appreciated.