mid 2012 macbook pro EFI

Well, first off you need to understand the command that you are typing. This is explained in the written tutorial. The working directory can be anything you choose. I have not uploaded my image yet as it is very large. But I will likely do it soon for ease. It looks like the only error you get is the chip isn't found. So you need to absolutely make sure the clip is seated and oriented the correct way. As far as I can tell your pin-out is fine, but you need to triple check it. Other than the connection everything looks ok. once the command succeeds you will find the efi directory and bin file in your home directory.