I'll be honest, this is the file I used. https://forums.macrumors.com/threads/mp51-0084-b00-rom-dump-request.2119496/page-16#post-26139167 I should of read all the post before doing anything, could of saved myself all this headache. Thanks to @tsialex, I'm not having to search for a replacement logic board for a computer I just bought yesterday. Long story short, I actually had tried flashing using the MacBookPro NVMe driver that is at the start of this thread, however I guess because I had installed High Sierra and when installing it, it forced me to update the firmware. I never was able to get it to boot without using the USB method. Good news is, I'm learning how to flash a rom chip. Which I always wanted to learn. Just wish it wasn't my new main system. lol Thanks everyone!