step 7 got me this:
Traceback (most recent call last):
File "ChoiDujour.py", line 517, in <module>
File "ChoiDujour.py", line 222, in call_hactool
Exception: Key (-snip-secure_boot_key = -snip-keyblob_key_source_03 = -snip-) must be 32 hex digits!. Code: 1
[12144] Failed to execute script...