Changing the logo at the space level.
The logo displayed in any space with Theme Press applied is selected, sized, and positioned within the theme itself. Users also have the option of overriding this configured logo for any space.
Rename your new logo image, based on image type.
The name of the file must use one of the following titles, in order for it to display.
Attach your chosen image to the space homepage.
Drag the image to your space homepage, or attach via the normal attachment screen.
Reload the page, and your new image will appear in place of the logo set in the theme.