G928F Read codes failed

Welcome to Octoplus/Octopus Box Samsung software version 2.1.5
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To connect SM-G928F 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.
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-G928F
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Read codes failed
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Platform: Samsung Android
Selected port: COM1
Selected model: SM-G928F
Detected phone model: SM-G928F
Firmware compiled date: Mon Dec 7 16:12:45 KST 2015
PDA version: G928FXXU2AOL2
CSC version: G928FITV2AOL2
SW version: G928FXXU2AOL2
Phone SN: R38GA0M346T
Android version: 5.1.1 (LMY47X)
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-G928F-Unknown26-12-2015_14-28-41-.asec
file
Deactivating MSL…
Executing exploit…
Executing exploit failed
Read codes failed
can i unlock this phone with write cert file ?
Thanks