g935s System volume protection error (DM).

[Patch certificate started]

Gathering phone info...
Collecting information. Be patient! Do NOT disconnect the phone!
Model: SM-G935S
Sales Code: SKC
Country Code: KOREA
Timezone: Asia/Dhaka
Android Version: 6.0.1 [MMB29K]
Build Date: Fri Feb 5 04:58:03 KST 2016
PDA Version: G935SKSU1APB2 [february 2016, rev2]
Phone Version: G935SKSU1APB2 [february 2016, rev2]
CSC Version: G935SSKC1APB2 [february 2016, rev2]
Product Code: SKC
HIDSw Version: G935SKSU1APB2/G935SSKC1APB2/G935SKSU1APB2/G935SKSU1APB2
Board Platform: EXYNOS5
Modem Platform: SHANNON335
Serial Number: R39H407AC2
Imei: 353289078614114
Unique Number: CE04160443615C2303
Connections: AT,MTP
Battery Status: 4.06V (77%)
Network Type: GSM
SIM Status: READY
Knox Version: v30
Warranty Bit: 1
Security Patch: 2016-02-01
Data Encryption State: encrypted

Patching certificate...
Initializing.
Reading modem. Be patient! Do NOT disconnect the phone!
Preparing.
System volume protection error (DM).
Unable to patch certificate.
Finished at local time: [04.07.18 13:44:50]
WorkID: 35929472