Wrong forum thread if you have a uis7862, or wrong downloaded zip if you really have a sc9853i.
And read before asking! All the answers are there.
General FYT based Spreadtrum uis7862 (unisoc ums512) - Q&A, Mods, tips, firmware. post #1 and #2
Edit: Ah, I see you already did that, but you didn't alter your post.