I have tried that tutorial for unbricking my phone so many times but it never works. I can never install the correct drivers because the phone doesn't even open properly for the PC to recognize it. I am just so mad at this thread, it ruined my phone by not saying that if you have upgraded your phone, do not use this tutorial. Now many people are making the same mistake and are breaking their devices. Thank you very much stupid old guide.
Your phone cannot go into download mode even if you have kdz file and the situation seems hopeless. However,the phone can be restored😀. I restored one recently.