Hi,

Yes, it's possible, but you will need hard code to it, do you familiar with WordPress Codex? You can open header.php file and see this code:

<div class="ip-logo">
    <img src="<?php echo esc_url($storm_jellythemes['logo']['url']); ?>" alt="<?php echo strip_tags($storm_jellythemes['blogname']); ?>">
</div>

The change it to below:

<div class="ip-logo">
    <img src="<?php echo get_template_directory_uri(); ?>/images/your-logo-name-here.png" alt="<?php echo strip_tags($storm_jellythemes['blogname']); ?>">
</div>

You need put your logo in images folder in storm-jellythemes folder.