[dogma1138]

I kept reading, from what I understood they restored the copy on the original chip, not made a clone. They could use the backup process to restore a specific partition but then you have a problem of wear due to writes, they've said that a 6 pin passcode is unlikely to be able to be brute forced on a single NAND chip without inducing possible damage due to wear.

Edit: You are correct, I've misread it.