Did you maybe link to the wrong sources? Your sources [3] and [4] are exactly the same. Source [5] refers to the old and discontinued Ledger Blue.
I totally did, thank you for alerting me. I have now corrected it.
If you notice within the linked [5] source, Ledger has placed within that folder recover's scripts (within the last month). I don't know why they particularly chose to place them in their discontinued product however.