Form

<form id="your-profile" enctype="multipart/form-data" action="<?php the_permalink(); ?>" method="post">
<?php wp_nonce_field('update-user_' . $user_id); ?>
<?php if ( $wp_http_referer ) : ?>
    <input type="hidden" name="wp_http_referer" value="<?php echo esc_url($wp_http_referer); ?>" />
<?php endif; ?>
<p>
    <input type="hidden" name="from" value="profile" />
    <input type="hidden" name="checkuser_id" value="<?php echo $user_ID ?>" />
</p>
    <?php $powercore =& Powercore::get_instance();
         $powercore->save_profile_data();
         $powercore->add_attachment($filename);
         $powercore->admin_edit_profile();
    ?>
<div class="update">
<input type="hidden" name="action" value="update" />
<input type="hidden" name="user_id" id="user_id" value="<?php echo esc_attr($user_id); ?>" />

<input name="updateuser" type="submit" id="updateuser" class="submit button" value="<?php _e('Update Profile', 'profile'); ?>" />
</div><!-- /.update -->
</form>