This flashing procedure tested by me without any problem just mention in required for everyone one who use this tutorial this tutorial many usefully for this device like hang on logo, restarting issue, dead issue in dead required for detect device if not detect then you can't flash it and sim lock issue, phone lock problem this any type software related issue then you can use this tutorial and good news which one this tutorial use without any box just download required for flash and following this tutorial step by step and done before use this tutorial first carefully read all tutorial because for easy to flash if and problem using this tutorial just leave your comment on below comment box and we are good reply soon and we are hope everyone better done this job and we are try to easy write content for everyone who working software related or non software related user also understand english or non understand english see blow description about flash file or tool.
This flash file or tool working better, and remember before use this tutorial must take data if your device live condition data like contacts, notes, messages, photos, videos because is use this flash file or flash tool then you can't save data because this is flash with factory reset so carefully also focus in required if any problem in required then you can't upgrade device like micro usb cable in this cable what happen ? device detect but show messages of usb not recognized so this problem in both first of micro usb cable and second of battery low, device not detect ? why if in device usb socket any line broke then your device not detect with computer or laptop so finally you can't flash, if not installed driver in your computer or laptop then you can't upgrade phone i means this is impotent for flashing so carefully read all are tutorial after try in step by step now let's see how to flash Samsung Metro 312 SM-B312E with Flash tool.
11. Wait for driver install, if driver not installed in your computer then update from above link's driver