after update 2.20 cant unlock j100ml phone alwayas faild

Welcome to Octoplus/Octopus Box Samsung software version 2.2.0
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Platform: Samsung Android
Selected port: COM1104
Selected model: SM-J100ML
ADB server killed.
Detected phone model: SM-J100ML
Firmware compiled date: Sat Oct 17 16:18:49 KST 2015
PDA version: J100MLDXU0AOJ4
CSC version: J100MLOLC0AOJ4
SW version: J100MLDXU0AOJ4
Phone IMEI: 35490807110
Phone SN: R21GB2ELRCE
Android version: 4.4.4 (KTU84P)
Connecting to phone’s modem port, please wait…
Phone unlocking failed
———————————————————————————–
Platform: Samsung Android
Selected port: COM1104
Selected model: SM-J100ML
Please, press "OK" button on the phone to allow USB debugging..
Detected phone model: SM-J100ML
Firmware compiled date: Sat Oct 17 16:18:49 KST 2015
PDA version: J100MLDXU0AOJ4
CSC version: J100MLOLC0AOJ4
SW version: J100MLDXU0AOJ4
Phone IMEI: 354908071115212
Phone SN: R21GB2EMKGE
Android version: 4.4.4 (KTU84P)
Connecting to phone’s modem port, please wait…
Phone unlocking failed