Installing bootloader on completely wiped phone
So, the issue here was that I did not have all files selected in SPFT when "downloading" (actually uploading) the files onto my device.

So, if you follow the steps here on a fully wiped phone, you need to get the ROM for your phone (the set of files that represent pretty much your future Operating System), select the .txt file to automatically find most files, and the manually search for the ones that can't be located by the program.