Hey There,
Whether you are using X or Pro, you should be using the same file. Please follow the following steps below:
1] Using Notepad or TextEdit or Sublime Text or any text editor, please create a new file in your local machine.
2] Insert the following code into that new file
<?php
// =============================================================================
// VIEWS/ETHOS/WP-HEADER.PHP
// -----------------------------------------------------------------------------
// Header output for Ethos.
// =============================================================================
?>
<?php x_get_view( 'global', '_header' ); ?>
<?php x_get_view( 'global', '_slider-above' ); ?>
<header class="<?php x_masthead_class(); ?>" role="banner">
<?php x_get_view( 'ethos', '_post', 'carousel' ); ?>
<?php x_get_view( 'global', '_topbar' ); ?>
<?php x_get_view( 'global', '_navbar' ); ?>
<?php ubermenu( '5776' , array( 'theme_location' => 'secondary-menu' ) ); ?>
<?php x_get_view( 'ethos', '_breadcrumbs' ); ?>
</header>
<?php x_get_view( 'global', '_slider-below' ); ?>
<?php x_get_view( 'ethos', '_landmark-header' ); ?>
3] Save the file named as wp-header.php
4] Upload this file to your server in the child themeโs folder wp-content/themes/x-child/framework/legacy/cranium/headers/ethos/
Hope this helps. Please let us know how it goes.