change starting screen IGO-NEXTGEN

[BartenDesi]

In my car i have the IGO-NEXTGEN version with maps 2018-Q3. I want to change the startingscreen with a picture of my carbrand.
How do i do that?
Hope to get a full description how to make this work. Thanks

[Boki]

Directly from this section
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Try to explore forum before asking:
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and
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and there are a lot already modified loadings, this one for example
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Will be trashed later