How to correct xTrans file if camera model is not in catalog

Software Siril
1

I have a X-T30 II (last year new model) and need to configure manually. Someone have the parameters I need to enter

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2

Do you have any ugly square in the center of your darks or biases?

3

No. In fact I don’t have it.

4

So you don’t need it.

5

I agree. Thanks.