I don't think this is true. If you watch the videos, dosdude1 specifically says he had to order blank NANDs for this process. Then you DFU restore the system from another mac. I have no proof, but I assume part of this DFU restore process is the new NAND chips being hardware paired in some way.

Again I have no proof, but there must be reasons he claims they have to be blank NANDs

> there must be reasons he claims they have to be blank NANDs

If you are building new SSDs, it makes sense to be certain that used NAND chips aren't slipping into your supply chain.

They do have a limited number of write cycles that they are good for, after all.

Watch the video again. He emphatically says they have to be blank or it won't work

Well, someone has to build the 3rd party module