I have the replacement WH16NS40 now with FW 1.02.
I can do whatever you need with it to get you the FW on it, just let me know what to do in detail if it will work.
I am running Windows 10
I did that and still the same issue.
I even just connected the drive to another PC running Windows 7 that worked with flasher.exe this time but also failed flashing or even extracting the firmware. The Unlocked flasher also didn’t work neither by running it normally or Running as an Administrator and same error message: