How to unlock SM-B350E?

The box show me the is unlock okay but when i put simcard show unlock.
How to unlock?

Платформа: Samsung Spreadtrum
Выбранный порт: COM67
Выбранная модель: SM-B350E
Выбранный порт: USB
To connect SM-B350E phone perform the following steps:
1. Disconnect phone battery.
2. Press and hold "1" button, connect USB cable.
3. Connect battery.
Phone found.
Sending preloader...
Preloader send successfully
Sending mainloader...
Mainloader send successfully
Unlocking phone. This can take some time. Please wait...
Разблокировка телефона...
Reading NV section section...
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung
\BACKUP\Security-SM-B350E_27-01-2016_13-45-50-.nv file
Writing NV section...
Телефон успешно разблокирован


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