Samsung j100h

Hi am stuck wiht this phone. After update with odin (phone stuck at boot loop) Can`t access download mode or recovery. Only thing i have so far is SCI USB2SERIAL in my device manager . After opening cover chip inside is SC7727S from Spreadtrum. Is this original or clone. Try to find stock rom to flash with ResearchDownload but no luck. Can`t find .pac for phone or fdl1 or anything else . Don`t know version etc… Any advice HELP 🙂 Thx in advance