How to get signed file by using DUA package?

[Masatoshi Nonogaki]

I test HCK and got signed file before.
Now, I will modify .inf file only and new signed file by DUA.
So, I will try it, but some error happens. Please help and teach how to do this.

My executed steps is as follows.

1. In Dashboard, I open the old submission(testing by HCK Studio) and click [Download DUA shell].
2. This file need Package manager 3.2.0.0, so I open this by using HLK Studio.
3. In HLK Studio, I check [Open as Driver Update package] and select the old DUA package.
4. I select [Replace Driver] and replace to new driver files.
5. I create hlkx file. (not signed) (*) file name is new_dua.hlkx
6. I compress hlkx file to cab file (*) file name is new_dua.cab
7. I add sign to cab file
8. In Dashboard, I select the old submission and select [Upload new]
9. Drag&Drop cab file, but following error is displayed.
[It looks like you submitted an attestation package, but a derived package is required.]
10. I select [Submit new hardware]
11. I select cab file and execute submission, but following Validation error is displayed.
[There are files at the root of the cabinet: new_dua.hlkx.]

Regards,

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