I would have assumed as per previous iphone models that they needed to desolder the nand and put it into jc pro or similar in order to clone it to the new nand.

I would have assumed as per previous iphone models that they needed to desolder the nand and put it into jc pro or similar in order to clone it to the new nand. Interesting that they just grind the old one off and do a dfu restore. I wonder what was done for that process.