View default header image while images are loading

Replace the else if on lines 354 and 355 with:

else if ($cimy_hir_curr_options['configs'][$id]['images_source'] == 'theme_uploaded') {
			$img_array = hir_theme_images_array_to_local_array(get_uploaded_header_images());
			$header_image = get_header_image();
			if ( ! empty( $header_image ) ) {
				if( ( $img_key = array_search ( $header_image, $img_array ) ) !== false ) {
					unset( $img_array[$img_key] );
					$img_array = array_values( $img_array );
				}
				array_unshift( $img_array, $header_image );
			}
		}

Then, put this in your theme header file where you want the header image to be:

<?php
				// Check to see if there is a default header image. If there is, display it while the image rotator loads the rest of the images. Otherwise just display "Loading images..."
				$header_image = get_header_image();
				if ( ! empty( $header_image ) ) :
			?>
<div id="cimy_div_id_0"><a href="<?php echo esc_url( home_url( '/' ) ); ?>"><img src="<?php echo $header_image; ?>" width="<?php echo HEADER_IMAGE_WIDTH; ?>" height="<?php echo HEADER_IMAGE_HEIGHT; ?>" alt="" /></a></div>
			<?php
				else :
			?>
<div id="cimy_div_id_0">Loading images...</div>
			<?php
				endif; // end check for existence of default header image
			?>

No guarantee of the quality of the code, but it works for me. YMMV. Enjoy.