If anyone knows the following is a bad idea, plz feel free to comment to why. Thnx!
I commented line 18 within the …/wp-admin/network/admin.php:
$redirect_network_admin_request = 0 !== strcasecmp( $current_blog->domain, $current_site->domain ) || 0 !== strcasecmp( $current_blog->path, $current_site->path );
Obviously I’ll need to do this for each update ?? But until there is a better solution…