Can you try this script (it's safe and very simple)?
[URL]https://github.com/SpookySkeletons/hp_bios_unlocker/blob/master/hp_bios_unlocker.sh[/URL]
Does it lead to the same result (I mean hashes of unlocked files) as the tool you used?
OK. I patched your dump with the script and it gives the following sha256 hash:
[CODE]$ sha256sum N25Q128A-markv81-unlocked.bin
a0f484d9bda83ae5578d6a0f8295edb5bd5457ae4629acbca003034f9059b319 N25Q128A-markv81-unlocked.bin​[/CODE]
I will try flash my bios with it and check if it works. I hope your dump is correct, because I...