NEO Z83-4: BIOS v1.7

When I try to flash this bios I get an error:
c:\Users\etadmin\Desktop\Z83-4-BIOS-V1.7\Z83-4-BIOS-V1.7>afuwinx64.exe CHT0A170.bin /P /B /N /X /R
+---------------------------------------------------------------------------+
| AMI Firmware Update Utility v5.08.00 |
| Copyright (C)2015 American Megatrends Inc. All Rights Reserved. |
+---------------------------------------------------------------------------+
46 - Error: Problem getting flash information.

My Neo Z83-4 is currently on BIOS V1.3. Anyone seen this before?
I have the same problem with V1.6.
Same problem when using the update.bat file, but then you can't see the error.
 
I tried updating from Windows and from UEFI shell. Both give me the same error.
In Windows I use WIndows Defender as anti-virus.
 
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