Before following this tutorial just remember some impotent tricks first if you following this tutorial just remember which is software version you want to flash it because if some choose wrong version and try in flash then your device will be dead or some issues so please carefully read all tutorial first after following because this is tested tutorial by me without any error also remember must be charged battery up to 80% to device also must be working well micro usb cable also must be working well of computer or laptop usb socket and last must be working well of device usb socket if any problem of above mention topic then you can't flash it.
This flash file tested by me without any error working well, you can use this flash file when your device hang on logo problem, restarting problem, security lock problem, password lock problem, pattern lock problem etc software related problem and you can use this tutorial without any box and this is free for all who know about software in mobile, impotent for flashing first must check your micro usb cable if not good then you can't flash it so check micro usb cable second check your device battery that is impotent for flashing if your device battery low so stop your device between flash so this is impotent for flash, before you flash save your data like contact, photos, videos etc because this is factory flash file so you can't save after full flash so must remember all are impotent notes.
1. First download tested firmware, flash tool or usb driver from above link (if link not working just leave your comment on below comment box)
2. Extract to desktop or as you like path (must be installed winrar software in your computer or laptop)
7. Install driver (if driver installed in your computer then detect device automatically with computer)
8. Wait until full installed android os in your device (do not unplug device while device in flashing mode)