Version 52902 introduced a "delta update" feature. To enable it:
Wurth occasionally retires older versions. Call Wurth Technical Support at 1-800-987-8845 and ask for the "Legacy 52902 installer archive." They will provide a direct FTP link valid for 24 hours. wurth wow 52902 download install
Because Wurth WOW contains your payment information, customer addresses, and ordering privileges, security is paramount. Version 52902 introduced a "delta update" feature