chimera tool not write cert successfully on g928s

Chimera Mobile Phone Utility version: 11.21.1624 @ 2016-08-28

[Read/Write certificate started]

Gathering phone info…
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G928S
Sales Code: SKC
Country Code: KOREA
Timezone: Asia/Karachi
Android Version: 6.0.1 [MMB29K]
Build Date: Sun Jan 31 12:12:17 KST 2016
PDA Version: G928SKSU2BPAG [january 2016, revG]
Phone Version: G928SKSU1BPAD [january 2016, revD]
CSC Version: G928SSKC2BPAG [january 2016, revG]
Product Code: SKC
Board Platform: EXYNOS5
Modem Platform: SHANNON333
Serial Number: 00000000000
Imei: 000000000000000
Unique Number: 06157DF651199B2A
Connections: AT,MTP
Battery Status: 3.80V (25%)
Network Type: GSM
Knox Version: v30
Warranty Bit: 1
Security Patch: 2016-02-01

Writing cert to phone…
Using new security.
Reading and storing secure image.
Checking secure image.
Write cert failed.
Unable to write cert.

Finished at local time: [08.28.16 04:53:38]
WorkID: 13077578