g925t not writing cert

Will fail when trying to execute exploit. Any solutions?

Platform: Samsung Android
Selected port: COM3
Selected model: SM-G925T
Selected file: C:\Users\Muccamoofrog\Desktop\cert-sm-g925t-
359146060454970-r58g40hj2pm.cert
Detected phone model: SM-G925T
Firmware compiled date: Fri Aug 5 15:48:22 KST 2016
PDA version: G925TUVS4EPH2
CSC version: G925TTMB4EPH2
SW version: G925TUVS4EPH2
Phone SN: R58GA2JFBXP
Android version: 6.0.1 (MMB29K)
Sales code: TMB
Country: USA
HW platform: exynos5
HW Chip: exynos7420
HW Modem: SHANNON333
Codename: zeroltetmo
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files (x86)\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-G925T-Unknown19-10-2016_17-56-14-.asec
file
Checking Certificate file…
Certificate file successfully checked
Deactivating MSL…
Executing exploit…
Executing exploit failed
Writing Certificate failed
Performed by 2.3.9 Software version.