I have done everything that he wrote in this post step by step using also attached files
https://forum.xda-developers.com/galaxy-core-prime/themes/stable-j5-rom-core-prime-g360f-3-t3575457
What do you mean by "Download the latest firmware for your region"?
Right now I had to restore the latest original Samsung firmware version for my italian G360F. I got it from the Sammobile site and used Odin 3.13.
I was talking about restoring stock firmware which you did.. This J5 ROM doesn't seem to be working as I said before. So use something in development section.