Write Certificate Error SM-G920T


I keep getting this error:

———————————————————————————–
Platform: Samsung Android
Selected port: COM101
Selected model: SM-G920T
Reading info, please wait…
Can’t kill external ADB references. Please, close all programs that use
ADB server.
Detected phone model: SM-G920T
Firmware compiled date: Tue Oct 27 22:46:10 KST 2015
PDA version: G920TUVU3DOJ7
CSC version: G920TTMB3DOJ7
SW version: G920TUVU3DOJ7
Phone SN: R58G3217KLK
Android version: 5.1.1 (LMY47X)
———————————————————————————–
Platform: Samsung Android
Selected port: COM101
Selected model: SM-G920T
Can’t kill external ADB references. Please, close all programs that use
ADB server.
Detected phone model: SM-G920T
Firmware compiled date: Tue Oct 27 22:46:10 KST 2015
PDA version: G920TUVU3DOJ7
CSC version: G920TTMB3DOJ7
SW version: G920TUVU3DOJ7
Phone SN: R58G3217KLK
Android version: 5.1.1 (LMY47X)
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files (x86)\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-G920T-Unknown13-01-2016_14-28-29-.asec
file
Wiping EFS…
Phone will restart now. Please don’t disconnect cable!
EFS wipe successfully
Searching for a phone. Please wait…
Can’t kill external ADB references. Please, close all programs that use
ADB server.
Detected phone model: SM-G920T
Firmware compiled date: Tue Oct 27 22:46:10 KST 2015
PDA version: G920TUVU3DOJ7
CSC version: G920TTMB3DOJ7
SW version: G920TUVU3DOJ7
Phone SN: R58G3217KLK
Android version: 5.1.1 (LMY47X)
Repairing security
Security repair successfully
———————————————————————————–
Platform: Samsung Android
Selected port: COM101
Selected model: SM-G920T
Selected file: C:\Users\Impact Wireless Inc\Downloads\cert-sm-g920t_
359362060124295_r58g31hj5qm.cert
Can’t kill external ADB references. Please, close all programs that use
ADB server.
Detected phone model: SM-G920T
Firmware compiled date: Tue Oct 27 22:46:10 KST 2015
PDA version: G920TUVU3DOJ7
CSC version: G920TTMB3DOJ7
SW version: G920TUVU3DOJ7
Phone SN: R58G3217KLK
Android version: 5.1.1 (LMY47X)
Checking Root:
Phone is Rooted.
Checking Certificate file…
Certificate file successfully checked
Phone connected successfully
Writing certificate…
Security damaged, please Repair Security and try again