BlueBerry S5.5 hard reset procedure
Hold volume Down , Home , power button
power on mobile release power button only
then shows android logo release all button
then only press Volume up
you can see andriod system recovery <3e>
use volume down key move on wipe data factory reset
press power button [ RESET IT ]
delete all user data
take data delete 5 minutes
Data wipe completed
Press REBOOT system Now
Enjoy....