Help zte z828 is bricked , i have no backup files its completely stock

My phone is either freezing on startup powered by android screen or it starts to boot then turns off and comes back on then turns off. Sometimes its just a black screen with red light. Ive never tried to root it nor have i tried to flash it. I factory reset it after it froze on me and wouldnt boot then i get this problem. Can somebody please send me a backup copy of their stock rom so that i may restore my phone please its urgent

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