In case people didn't figure out, or are struggling with how to use the unpacker, follow this tutorial, I used xampp, so my folder for the parser was inside C:\xampp\htdocs.
Also, you may get an error when trying to unpack or compile them, in that case, just adjust the config.php file inside the php2.8 inside the parser, put the source of your parser in there, in my case it was C:\xampp\htdcos\parser. If you have any questions, that the video doesn't answer, let me know, I'll try to help.
Disclaimer, not my video, it's from devtopz, give him a thumbs up.