To update the Google XML Sitemap V 1.9 to V 1.10:

1 - Run these mysql commands using phpmyadmin or your usual method:

select @this_id := ( configuration_group_id ) FROM configuration_group WHERE configuration_group_title = 'Google XML SEO';
delete from configuration_group where configuration_group_id = @this_id;
delete from configuration where configuration_group_id = @this_id;

2 - Run the included google_xml_sitemap_seo.sql file.

3 - Upload the following files:

googlesitemap/index.php
googlesitemap/sitemap.class.php 

4 - If your site is Responsive, delete all of the following
    files from the root directory, if they exist.

sitemap_mobilecategories.xml
sitemap_mobileimages.xml
sitemap_mobileindex.xml
sitemap_mobilemanufacturers.xml
sitemap_mobilepages.xml
sitemap_mobileproducts.xml
sitemap_mobilespecials.xml
sitemap_mobiletopics.xml

5 - Go to the settings in admin and adjust them as needed.

5 - Run the script to create the map files.