I have a Wordpress multisite installation and I need and extra field to hold specific ID of every single blog. Wordpress does not allow me to change the ID that is to be created for the blog so I am looking for another solution - custom field. The point is I cannot seem to add one.
What I have tried is:
switch_to_blog( $blog_id );
$guid = some value I retrieve from somewhere else;
update_option( 'guid', $guid);
restore_current_blog();
that ain't doing anything to wp_blogs though.